On an Earth torn asunder by natural disaster, three comrades fight to protect the weak and downtrodden: Princess Ariel, a mighty sorceress; Ookla the Mok, a tremendously strong beast-man whose arrow always fires true; and Thundarr, a courageous and skilled warrior who wields the powerful Sunsword, giving him the edge against the evil wizards and foul creatures who seek to destroy him.