Voir sur FrenchStream. Hanne, Marthe, and Klaasje are all set for their first tour, but Marthe notices that the colors of the rainbow have suddenly disappeared. Without the beautiful colors, K3 cannot put on a cheerful show. With the help of Captain Space, K3 tries to get the colors back from the inhabitants of the planets Amoria, Smilus, and Njammie. But that requires a lot of love, fun, and energy...Will K3 succeed in bringing all the colors of the rainbow back together?