During a camping trip, Gokuu Son and his comrades are ambushed by three enigmatic foes. A sudden appearance by Cooler, the vengeful brother of Frieza, escalates the conflict. Gokuu narrowly evades Cooler's wrath, fleeing with Gohan Son to evade their pursuers. As Cooler's determination intensifies, he and his minions relentlessly track Gokuu, intent on avenging Frieza's defeat by eliminating Gokuu.