On the day people say shooting stars will fall, Tayo thinks of Princess Ray of the Clover planet. That night, Tayo and the little buses wake to the sound of Princess Ray's voice calling them from afar.
The little buses hear Princess Ray's request for help because she's been captured by Bully. So they decide to travel out into space to save her. The little buses blast off into space with the space rockets Hana made for them attached to their bodies. The little buses' adventure to save Princess Ray now begins!