The story takes place on a cold winter's night where the snow continues to fall.
Shigaraki Tomura plans to destroy all of hero society as the leader of the League of Villains.
Prior to this, as a battle between heroes unfolds, without anyone else knowing, something quietly wakes up and leaves the area.
During that time, Deku and the other students of U.A. Academy Class 1A are told by the retired No. 1 Hero, All Might, that they will be part of a project to "raise the next generation of heroes." They are sent to do hero work for a short time at a warm island south of Japan.
Deku and the others are stationed within the island to work as heroes to help out with the daily lives of the citizens in the island and while their schedule is busy, they have time to relax as well.
However, that calm is soon disturbed as villains suddenly made their appearance at the island. One by one they begin destroying the facilities around the island. The one who commands them goes by the name "Nine."
That night, something awakens there.
Deku, Bakugou, and the rest of the Class A members will need to combine their strength to overcome the Villain Nine!
Why does Nine want to attack this island after all!?
Can Deku and the other Class A "New Heroes" protect the citizens of this island from the Villain Nine!?