The planet Rosetta has been taken over by the Black Star army led by Captain Dagger. Takashi Shishido and his mother Rosemary escaped to Planet Earth after his father Gou was captured by Dagger, who is actually Takashi's evil twin brother Hiroshi! While living peacefully on Earth, Takashi attends a kung-fu school in Japan, and has four friends, but they had no idea that he was ...