The manga centers on Makoto, a young boy who acquires superpowers as a result of a malicious gene manipulation experiment. Makoto and other youths become apprentices for the Avengers, taking on the title "Future Avengers." The series depicts Makoto and his peers as they train, battle villains, and mature, all under the guidance of Avengers members Iron Man, Captain America, Hulk, Thor, and Wasp.