In a world where Gundam is a very popular T.V. show, Sei Iori wishes to be just like his father, who was a Gunpla champion years ago, unfortunately, Sei only has skill in building Gunpla, but once he meets a boy named Reiji, who has the ability to fight with his Gunpla, everything changes. Will they be able to make it to the top just like his father did?
