To avenge the attack on Earth, Peri & Diesel have sided with the Meigwors in the new intergalactic conflict. They agree to rescue a Meigworian prince, held captive by the Xions. But as they leave, the Meigwor insist that Otto, a gigantic Meigworian bounty hunter, must accompany them, & Selene should stay behind to help fix the Phoenix.