High schooler Yo is a aspiring musician struggling with his parents' opposition to his dream and the dynamics among his bandmates. One day, he suddenly hears a desperate voice in his head crying, "Help!" before being engulfed in a white light. Meanwhile, on the distant floating planet, two warring nations on the brink of a ceasefire after a long battle over energy resources prepare to sign a truce. At the same time, Rako, a robot mechanic handling massive falling orbital debris, falls into a coma. The story unfolds as Yo and Rako mysteriously connect within their consciousness.