In a post-superhero world, we meet Jean, a young charismatic, intelligent and athletic man... or well, that was before he entered high school, where he goes into depression when he is overtaken by the descendants of the ancient heroes, villains and fantastic beings that are now the majority. However, one day he meets Sylvia, a charismatic girl with gifts that are ridiculously powerful who only seeks to live a quiet life, and Teesa, a human like him who, in addition to training her body and mind, uses gadgets to go out every night to deliver justice to the villains and criminals of Astro city. And this is the story of these three, meeting and growing up in this broken world that focuses on healing old wounds caused by the ancient fights between heroes and villains.