Luna was walking along the halls her blue shoes clicking against the floor. Her eyes were shifting along the hall as they settled on the group of ponies staring at two doors before them. As she walked closer she noticed both Selene and Twilight’s door were sitting side by side. Luna noticed this and looked into the group of the ponies sighing.

“I thought Twilight would be with us” she sighed as she looked towards the doors before glancing towards her sister.

“Which one should we help first?” She asked the question already knowing the answer. Celestia’s eyes were glancing towards the door with Twilight’s cutie mark on it. She didn’t half to say anything Luna just knew. Walking to the door Luna placed her hoof towards the door pushing it open. Celestia and the others walked in slowly noticing how organized it was.

“I knew Twi was an egg head but this is nuts!” Rainbow shouted as Luna and Celestia walked down the stairs and into the bookshelves. Rarity stayed beside Applejack as Fluttershy walked beside Shining Armor. He was accidentally dragged into his sister’s mind. It was a bit weird and strange for him but it would let him know what she was thinking. Rainbow was flying overhead watching the others move towards the door where a dark blue light was shining from. Luna allowed her sister to enter into the hall as she held the others back. Celestia walked up to the door inspecting the silver lock. She new this magic as it was something her mother had taught her. It was the same type of magic her old mentor Starswirl had expanded upon. Grumbling she took a deep breath as she closed her eyes. She focused her magic on the lock taking her time she worked the lock. Taking her time Celestia heard the lock clicking before fading away. The ponies in the back watched as the doors gave way flooding the area and pulling the ponies deep into Twilight’s memory.

The sun was shining high into the sky. Her eyes were moving about as she noticed ponies walking around shouting orders to each other. She looked up towards a light grey mare with a white and lavender mane and tail wearing a tan explores outfit. She was writing in a notebook as she walked along the deck of the ship.

“Okay so we half enough supplies for two months” the mare turned to look at a tall dark grey unicorn with a white mane. He was wearing a dark blue captain’s outfit. He nodded as he walked off.

“Twilight there you are. We are almost to the islands” she smiled as Twilight nodded. She walked towards the edge of the ship noticing the water and how clear it was. She watched the animals move around till her eyes caught the sight of a small pony with a blue tail swimming alongside the ship. Her head tilted as the pony looked up before waving. Twilight shook her head before looking down she noticed the pony was gone. Twilight moved away from the side of the boat as she noticed her mother was calling for her. Turning around she ran as fast as her little hooves could take her. She noticed her mother was standing next to an opening on the side of the ship leading to a smaller boat.

“There you are. Now climb in” her mother smiled as Twilight looked towards the boat.

“Why?”

“Well this boat is too large to get closer to the islands. So we need to take this smaller boat to the island” her mother smiled as Twilight nodded. Looking towards the boat she noticed two wooden boards connected the two ships. Placing one hoof out in front of her she took her time and moved into the smaller boat. Once she was in she looked over the edge of the boat. She saw the pony again waving towards her. Twilight simply stared as she noticed fins were spread out behind her.

“Twilight what are you looking at?” she heard her mother call to her. Turning her head back she looked back at her mother as she pointed towards the water.

“A pony is in the water?” the ponies on the ship leaned over and watched as the pony swam away.

“Oh you need to be careful young one” one of the deck hooves spoke up causing her mother to turn towards them as they lowered the boat “This area is full of sirens and weird magic” the old Pegasus flared his one wing. Twilight glanced over the boat as the rowers started to move the boat. Once the boat hit the beach Twilight jumped out of the boat and started to move along the sand. An old light blue grey earth pony with a white mane walked up holding a stick with empty coconut shells on the end.

“Ti” the pony bowed as a taller dark blue unicorn with a silver and white mane walked up and smiled.

“Father says hello. I am NitTa. Nice to meet you” he smiled as Twilight watched as her mother smiled and bowed.

“I am surprised to find a pony who knows perfect equish and at an old age” she smiled as NitTa smiled.

“I am only fifteen. And I learned from the many explores stopping on our island.” He smiled causing her mother and the others to gasp. Twilight turned her head around as she looked out towards the water. She noticed the fins in the water as small ears appear on the surface.

“Kiadre lek meticah. Tre ta kale metrk. Casuo lamare” the old pony smiled as NitTa giggled.

“My father says the queen of the sea is a curious one. She will not harm any of you and she is quite friendly” NitTa smiled as he waved his hoof towards her.

“Kiadre! Le tirka!” he waved his hoof in as the ears disappeared under the water before reappearing closer.

“A siren!” one of the ship hooves shouted as the islanders looked towards each other. Twilight watched as a small filly moved from the water her mane covering her face. Sitting on her blue tail she pushed her mane back and smiled. Slowly she dragged her tail out of the water she pressed her nose up against Twilight’s nose. Her fins were raised as she tilted her head.

“Young one this is Kiadre” NitTa smiled as the pony in front of Twilight giggled.

“This is Twilight my daughter not young one” her mother spoke up as the pony in front of him in front twilight smiled.

“Twilight! I am Selene” she clapped her hooves as she held her hoof out towards her.

“Aw so Kiadre has a name” NitTa shouted causing Selene to blush before looking away “Anyway let us show you where you will be staying for the trip” NitTa turned around as the elder stayed behind watching Selene with a soft smile on his face. Twilight turned around and followed her mother. However, her mind was racing with different thoughts as she noticed the pony was talking to the elder. Twilight helped her mother pull their supplies from the boat towards the hut near the river. As she was placing some of the items around she noticed Selene was in the river watching. However, when Twilight would catch her Selene would disappear quickly. As she was getting the last of the items the sea started to turn rough as a storm was coming in. The sea hit Twilight dragging her out to sea. She tried to gasp and called for help as the island got farther and farther away. She closed her eyes as she started to go under. It started to go black till she felt something grab her and brought her back to the surface. Coughing the water out of her lungs Twilight looked down as Selene was moving her towards another beach. Once she got Twilight on the beach Selene pulled Twilight closer to shore. Twilight watched as Selene pulled her under a tree as buzzing filled her ears.

“Where am I? where is my mother” Twilight wined as Selene pulled her into her hooves.

“The sea swept you out far. I was able to calm it until I was able to reach you. I can’t stop the sky gods wrath so we half to stay here” Selene looked towards her hooves as Twilight noticed Selene wrapping her tail up. The leaves were moving as a pair of hooves grabbed them. Twilight closed her eyes calling out for her mother.

“Why Kiadre?” Twilight’s ears twitched as she noticed the words they were speaking. Looking up she noticed tall dark blue bugs with light lime blue green abdomens with thin transparent wings. Their eyes were large and light blueish green as well. They were chirping back and forth as some placed a towel on Twilight as she glanced towards Selene. She was busy drying her hair before smiling over at Twilight pushing a leaf towards her. glancing down she noticed some charged flowers with onions and other roasted items.

“Roasted blue lilies and onions with cocos” she smiled as Twilight picked up a piece of roasted coconut. She placed it in her mouth as her eyes lit up turning towards Selene.

“They make the best. Oh, this is the chief of the nightwalkers Orion” Selene pointed towards a taller pony as his wings were spread out as he bowed. She noticed he had two sets of wings as he had a horn on his head.

“Orion this is Twilight. She part of the explorers on the island of Solis. The sea swept her out. I can’t fully calm it down.”

“I see you have your crown now” he smiled causing Selene to look up. As she moved her towel Twilight noticed her mane was flowing and moving like the sea. Selene reached up and noticed a small crown sitting on her head. Looking back Twilight noticed a large gem in the middle of her fins.

“What happened to you” Twilight got to her hooves as Selene glanced towards her.

“From what the first Queen Roseate told me. This is how the sea chooses its ruler amongst your kind”

“I did not think It would choose me. I thought it would choose my brothers” She sighed as she shook her head causing her mane to even out.

“What are you?” Twilight looked to Selene.

“I am a merpony. I live in the sea”

“She is also the ruler of the sea now. Both of you can stay for the night till dawn. From one ruler to another I know we will not fight” he smiled as Selene nodded.

“I do not wish for fighting. I just got to know the surface world. But where did you come from? There are only three islands in this world” Twilight started to laugh as she shook her head.

“I am from Equestria. It is a large land from here” Twilight was still watching her and trying to wrap her mind around what Selene was.

“Oh can you teach me about the surface?” Selene got closer as Twilight nodded.

“Okay” she spent the night telling Selene everything about the surface. Selene took a few turns and told stories from her kingdom from the sea below. The nightwalkers sat around the fire listening to Selene. She told them tales of different ships she had found and what gem smelled like what type of scent. This when on till the sea started to calm down and the storm moved away. Selene stuck her head out as she noticed it was calm.

“I think the storm has disappeared”

“It has the moon it out” Orion smiled as they started to move from the hut. Twilight walked alongside Selene as they made it to the beach. The moon was out in full as it lit up the area as if the sun was out itself. Twilight noticed the Nightwalkers were glowing a soft blue as they spread their wings out.

“Aww the moon it is so nice. Better than the summer sun” the chief smiled as Selene nodded as she pushed an empty turtle shell into the calm surf.

“I can get you across now” Selene smiled towards Twilight. The purple filly nodded as she slowly climbs into the shell as Selene waved towards the chief handing him a few of her scales.

“I wish you peace and good fishing and hunting” she smiled as the nightwalkers bow.

“You honor us Kiadre”

“You honor us by giving us shelter Chief. Well, I must get her home” she smiled as she moved towards the shell pushing Twilight slowly along the sea. Twilight noticed the moon was reflecting off the water allowing her to see the silver scales of the fish swimming around the ocean. It was a bit before Twilight saw another island. She noticed the old pony was standing on the beach watching the sea.

“Did he stand out here all night” Twilight spoke up causing Selene to stop. She looked up noticing the old chief was standing on the beach.

“He does this to alert me to a pony lost at sea. I normally return them dead or alive. He will not rest till they return” Selene glanced towards Twilight.

“Really dead?”

“Many ponies can not swim. And when I am not around there is no one to save them. Most of the islanders just want their loved ones back so they can mourn them properly.” Selene kept her eyes on Twilight as the filly looked towards her.

“They ask that of you?”

“I just do it. Why not help those who have lost something” Selene tilted her head as Twilight was nodding. Selene started to push the shell closer to the beach allowing her to hop out of the shell. The chief smiled as he waved his hoof towards Twilight before shaking the stick in his hooves. This caused lights to appear before walking out on the beach.

“Twilight!” her mother ran towards her and picked her up hugging her.

“I thought I lost you” the unicorn looked towards her daughter.

“Selene saved me” Twilight pointed towards the merpony.

“Thank you” she smiled as Selene bowed.

“I will see you tomorrow” She waved towards them before disappearing. It was the next day and Twilight was sitting on the beach waiting as Selene came to shore smiling. Twilight was blushing as she noticed Selene had her hair braided and placed up allowing her gills to be seen. Selene smiled as she sat with Twilight telling her stories still. Twilight was showing her some of the magic Celestia had taught her causing Selene to giggle. Whatever Twilight showed Selene she was able to turn it and twist it into a workable version for a merpony. They spent another few days together before Selene appeared with another merpony. She looked like Star and introduced herself as her grandmother Roseate. Most of the islanders were shocked to see the first queen. She spent the day talking to Twilight’s mother as Selene and Twilight would roam around the island. She had learned a spell from her grandmother and would enjoy the days they had. Both of them were walking alongside the wade pools as her grandmother was spending another day teaching the ponies how to heal and different plants that could help. Twilight was watching Selene as she was holding different sea creatures up teaching her about them. She had a sea star on her hooves as Twilight walked up and kissed her. Selene placed the sea star down as her face turned a deep red as her fins spread out red as well. Twilight was looking around as she was panicking thinking she did something wrong Selene leaned in and kissed her back.

“You…I” Twilight was stuttering as Selene giggled.

“I like hanging out with you. You have been so nice to me and I can’t stop thinking about coming out and being with you” Selene was looking away as Twilight hugged her.

“I like hanging out with you too. Its been nice these past few weeks. I never had a pony like you who wanted to hang out with me. They always make fun of me because I like to study.” Twilight looked towards the sea creatures.

“What but studying is a nice way to calm down. I can show you how to transfer a book from the surface to merpony” Selene smiled as Twilight looked towards her nodding. They made sure the sea creatures were near the water before leaving the area. Selene had taught her how to use squid ink to make a book readable for a merpony. Twilight smiled as she took this knowledge and started a book for Selene in secret. She filled it with different spells from the surface. As time drew closer Selene and Twilight spent many days together growing closer. It was time to leave and both of them were standing on the beach. Selene held out a short blue sapphire sword.

“My grandfather had given me this sword. He said to give it to the one I like. I know it be many years till I can get to the surface but once I find a way I will come to see you” Selene smiled as Twilight looked towards her as she pulled the sword towards herself.

“What if I live my dream. I become a teacher and have a family” she looked away as Selene smiled.

“Then I can be your first student and we can still be friends right?” Selene looked towards her as Twilight nodded.

“Of course friends” she smiled as she handed Selene the book. She placed it in her bag as she followed Twilight to the large ship. Once she was on the larger ship Twilight ran towards the railing and looked towards Selene and waved as the ship sailed away from the island. Moving from the railing she noticed water puddles on the deck. A tall dark green merpony was standing in front of her holding a golden trident. It was her father Triton.

“Your memories of my daughter will be sealed away surface pony. May you be scared of the sea and the creatures within. May you never come in touch with another merpony after this. May you sleep and let this spell take place.” A gold wave of magic washed over Twilight causing her to fall to the deck holding her bags to herself. As she closed her eyes the group found themselves standing in the hall as the sword and book were shining brightly. The windows started to move again showing the memories once sealed away.

“They knew each other already” Fluttershy spoke up as Applejack fixed her hat.

“So Selene was the sea fairy Twilight would sometimes mention” Celestia looked towards her sister as Luna nodded.

“Their hearts still knew each other but her father”

“Why would her father do this” Applejack huffed as Luna looked towards the door to the hall.

“One way to find out” Luna walked towards the door with the group following her.