At the end of the year Nezu, the principal of UA, decided to randomnly pick first years from class 1-A or 1-B to participate in something called UA's Civil War. The teams are picked, hero team and villain team, each have five. The purpose of this game is to get them ready for any times a situation where they need to go undercover and complete missions come up and to test out their skills. Ohh who are we kidding, Nezu just wants something interesting to happen. As the Civil War game goes on secrets get exposed and questions get raised. How will UA react when they realize they awakened the lion sleeping among sheep.