Infinite worlds. When Princess Twilight Sparkle discovers the possibility, she is determined to see and learn all she can. Her experiment goes wrong however and she accidentally pulls another pony's soul into herself. Who is Midnight Star? Twilight thinks she knows, but the mysterious Midnight has her secrets. Secrets that could cost Twilight and all of Equestria the peace and harmony the nation has known for millennia.
After centuries of chaos, Equestria finally has a chance to recover only for a small dragoness to bring dire news: The world itself is dying.
Experimenting with magic can be dangerous, and when Twilight Sparkle accidentally pulls another pony's soul into herself, it nearly costs her everything she holds dear.
Midnight Star was given a second chance to be happy without the horrors of her memories; but those memories were never truly gone. They are only the beggining of her struggles however, Equestria is about to face a new threat; The Frozen Empire