It’s been over two years since the God Candidate tournament and Ueki and Mori are about to graduate from middle school and reunite with their former teammates – that is until the entire world loses their memories of the people they care most about! After locating the culprit, Ueki and Mori discover that the lost memories are stored within a bizarre animal named Wool and to release them, Ueki – as the only person unaffected by the phenomenon – must travel to the Megasite within the world of Hangenkai, a land populated with power users. But having lost his power to turn trash into trees, and being unable to use his sacred weapons, can Ueki obtain new strength and manage to make it to the Megasite to return his world to normal?

There’s an adage that one man’s trash is another man’s treasure; but for Kosuke Ueki, one man’s trash is another man’s… tree?! Junior high school teacher Mr. K is in the running for the title of Celestial King. Candidates must select a junior high school student to endow powers upon, and then the students might fight each other mercilessly. The victorious student’s benefactor will become the new Celestial King! Kosuke was Mr. K’s choice, and for his power, he chose the ability to turn trash into trees. Furthermore, if he uses his abilities to harm others, he will lose one of his natural talents. Now, Kosuke must battle a variety of other power users to help Mr. K win it all, all while keeping his talents intact!