Through the battle with Minato Sakai, Sekai and Fumina have realized what they need to do, and they quickly begin working towards the championship. Meanwhile, in order to keep his promise to Fumina, Yuuma is building power-up equipment for his Lightning Gundam. But rival teams are also steadily preparing for the regional qualifying tournament. Each with their own dreams in their hearts, they all gather for the Gunpla Battle Japanese Under-19 Championship’s West Tokyo Tournament. On the first day of the tournament, Fumina arrives with her just-completed Winning Gundam, and Sekai and Yuuma have been making their own preparations too. A random drawing determines that the Try Fighters will fight in match three of the first day. Demonstrating the results of all their efforts thus far, the Try Fighters finally begin their struggle to reach the national tournament!