Seven years have passed since Sei Iori won the 7th Gunpla Battle Championship World Tournament. The Gunpla Battle Championship is now run by Yajima Trading. With new rules and battle modes, the game's popularity has become even more widespread.
However, the Seiho Academy that Sei Iori once attended has failed to catch onto the trend. The only member of the school's Gunpla Battle Club is its president, middle-schooler Fumina Hoshino. Currently there is no way the club can participate in the upcoming Gunpla Battle Japanese Under-19 Championship, where players fight in teams of three.
Then Fumina meets a new transfer student. He is Sekai Kamiki, a young martial artist who has been travelling with his master. Together with a young Gunpla builder named Yuuma Kousaka, they finally have three members for their team.
Sekai Kamiki, Yuuma Kousaka, and Fumina Hoshino – team “TRY FIGHTERS” is about to begin its challenge!