After Gokuu's victory in the World Martial Arts tournament, he enjoys a peaceful life alongside his family. This tranquility shatters when Raditz, a stranger claiming to be his long-lost brother, emerges. Raditz discloses Gokuu's Saiyan heritage, a warrior race nearly extinct, and his original mission to conquer Earth. However, Gokuu's amnesia-induced change of heart steers him towards defending the planet. Rejecting Raditz's recruitment efforts, Gokuu's friends are forewarned of a looming threat—an impending conflict over the coveted Dragon Balls, capable of granting any wish. As tensions escalate, a fierce battle for survival unfolds, testing alliances and strength in the face of cosmic turmoil.