FROM 8 years ago , a lost sayan called aotku lost his memory about his past because of accident and now only he can remember his child hood friend call zed and he do not know that he is sayan , and while he is trying to find zed he found Lizard knows how to use kai and he will know later where zed and he knows that zed is planing to destroy the world so dr.lizard will teach and train aotku to be strong sayan to save the and knows from zed what happened before 8 years ago