After the tense final exam was over, the students of Xiongying High School were waiting for the summer camp training in the forest.
Midori and All Might get an invitation from a big man to visit "I·ISLAND", a huge mobile city located overseas.
On the island of "I ISLAND", which is like scientific Hollywood, an exhibition about the research results of heroic personality is being held that gathers the wisdom of elite scientists from all over the world.
At the same time, the defense system of Island I, which has always been proud of its solid security system like an iron wall, was hacked by the enemy. Everyone on the island has been taken hostage!
Now, "that plan" that shakes the structure of hero society is about to start!
