Four weeks after the League of Villains' attempt to assassinate All Might, the students of Class 1-A return to USJ to complete their disaster training. However, unbeknownst to the heroes-in-training, an unexpected foe is lurking within the facility's walls and waiting to strike...

Due to his relationship with All For One, Yuga Aoyama calls himself a villain, but Deku tells him that he can still be a hero and reaches a hand out to him.

It's finally time for the decisive battle between heroes and villains! The plan by All Might, Aizawa, and the others has them start their fights in various places around Japan!

Even though Shigaraki's Quirks are sealed, he attacks Bakugo and the others with a strange new appearance and power. Meanwhile, Deku is pulled to where Toga was warped and Todoroki and Dabi face off!