Team Try Fighters, winners of the Gunpla Battle National Championships, are extended an invitation by Yajima Trading to test the company's new battle technology on a faraway island. Sekai and Fumina accept the offer, only to stumble upon Gyanko, Shia, and Minato, who have also been invited. By contrast, Yuuma declines because he has to attend a photo shoot with Mirai. Ironically, they all end up stranded on the same remote island. When a sudden disturbance of Plavsky particles at the Nielsen Lab causes an enormous crystal to emerge, chaos breaks loose among the Gunpla kits on the island, making it crucial for the Gunpla Fighters to unite and prevent the crystal from causing more disruption within the Gunpla Battle System worldwide.