All Might and Deku accept an invitation to visit an artificial floating island called I-Island, where they fight a villain who takes the city hostage.All Might and Deku accept an invitation to visit an artificial floating island called I-Island, where they fight a villain who takes the city hostage.All Might and Deku accept an invitation to visit an artificial floating island called I-Island, where they fight a villain who takes the city hostage.