In a world where most people have superpowers, a group of young heroes in training, known as Class 1-A, embarks on an exciting adventure that will push them to their limits. After spending an intense summer training on an island, they decide to enjoy a day of vacation in a paradise-like location. However, their well-deserved rest quickly turns into chaos when a powerful threat appears on the horizon.
A group of villains, led by the fearsome Nine, threatens to destroy everything in their path in a bid to steal the essence of heroes. With their unique abilities and a plan in motion to subjugate the island, the team is forced to join forces to protect the citizens and their own dreams of becoming true heroes. What should have been an idyllic getaway transforms into a fierce battle where each of them must confront their own fears and prove their worth.
As the class faces annihilating challenges, including the possibility that some of its bravest members may face personal sacrifices, the bonds of friendship are put to the test, and lessons of heroism become clearer than ever. This is an exciting story that blends thrilling action with heartfelt moments, where each hero reveals their best self, rising to the occasion.