Once everypony got on the submarine with the supplies loaded onto it, they all got ready to go underwater as the pony diving officer said "Rig ship for dive!" The pony chief of the watch nodded, and said "Aye, sir! Rig ship for dive!" At the bridge, Sunset Glare looked at Starlight Glimmer, and said "Lieutenant, take her down." Starlight Glimmer nodded, and looked at the pony diving officer as she said "Diving officer, submerge the ship. Make the depth 1-5-0 feet." The pony diving officer nodded as he said "Make the depth 1-5-0 feet." Then the intercom said "Dive, dive! Five degrees down bubble." As they prepared to get the submarine moving, the pony diving officer said "Take us down!" The warning alarm buzzed, and the submarine got unhook as it started to submerge into the water. Once the submarine got deep enough into the water, Dusk Shine went into his cabin, and put his stuff, and his jacket away as the elderly voice talked into the microphone, and said "Attention. Tonight's supper will be baked beans. Musical program to follow." As the Dusk Shine sat down on his bunk bed to settle down for a nap, the elderly voice talked into the microphone, and said "Who wrote this?" Dusk Shine then settled down for his nap, and an earth pony named Bubble Berry looked down on him with his goggles. He then got a better look as he turned on the light on his goggles, making Dusk Shine wake up, and hit his head on the bunk ceiling.

"You have disturbed the dirt." Bubble Berry said in a low voice. Dusk Shine tilted his head in confusion, and said "Uh, pardon me?" Bubble Berry got off of his bunk bed as Dusk Shine got up from his bunk bed. "You have disturbed the dirt!" Bubble Berry said pulling the bed sheet to reveal piles of dirt. "Dirt from around Equestria, spanning the centuries!" He gasped as he tried to straighten the piles of dirt that got merged together, and said "What have you done?! Ponyville must never merge with Appleloosa!" "What's it doing in my bed?!" Dusk Shine asked in shock and dismay. Bubble Berry then got in Dusk Shine's face as he said "You ask too many questions. Who are you? Who sent you? Speak up!" Dusk Shine gulped, and said "Me? I'm, uh..." Bubble Berry interrupted him, and said "Bah! I will know soon enough." He grabbed Dusk Shine by the mane. As Dusk Shine struggled to get away, he said "Hey, hey, hey! Let go!" "Do not be such a crybaby, and hold still!" Bubble Berry said as he took out a small piece of Dusk Shine's mane. He smiled at the piece, and used his goggles like a microscope as he said "Aha! There you are. Now, tell me your story, my little friend." As he looked at the tiny objects in the piece of Dusk Shine's mane, he said "Parchment fiber from the nile circa 500 B.C. Lead pencil, number 2. Paint flecks of a type used in goverment buildings. You have a cat, short-haired persian. Two years old. Third in a litter of seven."

Bubble Berry looked up at Dusk Shine, and said "These are all the microscopic hoofprints of the mapmaker." He licked the piece of Dusk Shine's mane and said "And linguist." "Hey, how did you-." Dusk Shine tried to say, but Bubble Berry got angry as he shoved his stuff, and jacket into the unicorn, and said "This is an outrage! You must leave at once! Out, out, out, out, out!" Bubble Berry tried to shove Dusk Shine out of the cabin, but somepony was blocking them. Dusk Shine looked up to see an earth pony with a brilliant orange mane, moderate sap green eyes, light yellowish gray hooves, and a big green apple for his cutie mark named Big Macintosh or Big Mac for short looking down on him. "Uh-oh. Sat in the dirt, didn't you?" Big Mac asked. He looked at Bubble Berry, and said "Bubble Berry, now what have Ah told you about playing nice with the other ponies?!" Before Bubble Berry could protest, Big Mac took out a bar of soap, and said "Get back, Ah've got soap, and Ah'm not afraid to use it!" Bubble Berry hissed in disgust, and he climbed back into his bunk bed as Big Mac hit him with a long cloth, and said "Back, foul creature! Back to the pit from which you came. He looked at Dusk Shine, and they did a brohoof as he said "The name's Mac. Big Mac. Medical officer." "Yeah." Dusk Shine said. "I'm Dusk Shine."

"Dusk Shine." Big Mac said as he put his doctor coat on. "You're my 3:00." He took out a saw as he said "Well, no time like the present." Dusk Shine gulped, and said "Oh boy." "Nice, isn't it?" Big Mac asked. "The catalog says that this little beauty can saw through a femur in twenty-eight seconds. Ah'm betting Ah can cut that time in half." He put the saw in his medical bag, and took out a tongue presser as he said "Now, stick out your tongue, and say Ahh." "Oh no, really, I have a-." Dusk Shine tried to say, but Big Mac placed his tongue presser on the tongue, and said "So, where are you from?" Dusk Shine grunted as he tried to say that he was from Canterlot. "Really?" Big Mac asked as he placed a thermometer in Dusk Shine's mouth, and used a stethoscope to listen to his heart. "Ah have family up that way. Beautiful country up there, Do you do any fishing?" Dusk Shine grunted as he tried to say that sometimes he does, and asked him if he does some fishing. "Me?" Big Mac asked as he took out a watch to look at the time. "I hate fishing. I hate fish, and the smell of them." He took out some measuring cups, and said "Here, Ah'm gonna need you to fill these up." Dusk Shine spitted the thermometer out, and said "With what?!" "Will Dusk Shine please report to the bridge?" The elderly voice said on the microphone. Dusk Shine then sighed with relief, and said "Thank you." He then straightened himself out, and said "I mean, uh, uh, nice meeting you." He took off running as Big Mac said "Eeyup. Nice meeting ya'll, too." Bubble Berry got off of his bunk bed, and looked on in confusion.