As the superheroes protecting Star Planet, aside from fierce battles during times of danger, how to ensure the residents live and work in peace and enjoy ordinary happiness might seem even more challenging. The two villains, Big Bad and Little Bad, have also set their sights on the ordinary people of Star Planet, believing that conquering it step by step is the feasible path. This time, Happy Superman and the other superheroes will venture into the perilous Apathy Planet, embarking on various adventures to obtain even more powerful new Mechas. Throughout this journey, there will be plenty of danger and tension, but also many comical and hilarious mishaps along the way.