Superpowered humans known as NEXT appeared in the world 45 years ago. Some of them fight crime in the city of Stern Bild while promoting their corporate sponsors on the hit show HERO TV. The people love their superheroes, even if they don't completely understand them, and not all of the NEXT use their powers for good.

When he was a child, Barnaby lost his parents to a shadowy organization called Ouroboros. The search for his parents' killers may lead both Barnaby and Kotetsu into a dangerous conspiracy that has wider implications for everyone in Stern Bild City. Then the heroes jump into action against rampaging mecha and renegade NEXTs and the secretive hand behind it all!