Annie Leonhart has just gotten out of the crystal that she's been in for five years. She gets out of the crystal and has no clue about what has changed. She's in a place that she has never been in before. She finds her way out of the area and sees her best friend Riner Braun and he is the king of the walls. Annie goes to revisit everyone. The first person she goes to see is Mikasa Ackerman who is her rival. Something happens and after 8 months Annie is forced to leave the walls and she goes on a big adventure. This story is girl x girl and it's a crossover.