Story : Renge proposes a competition to retrieve the two remaining Chemies, with Nijigon at stake. Despite a stunned Houtaro, Rinne, Sabimaru, and even Nijigon get involved...! Gigist appears before Houtaro. Gigist tries to dye the Chemies in darkness, but Houtaro uses the power of Nijigon to prevent him from doing so. He transforms into Rainbow Gotchard and clashes with Gigist!