When the enigmatic 'Big Gete Star' latches onto planet New Namek to drain its energy, endangering the Namekians, Dende, the Earth's new protector, reaches out to Gokuu Son and his comrades for aid. Arriving on New Namek, they find the Namekians imprisoned by formidable robots, led by none other than Cooler. Cooler reveals how the technological prowess of the Big Gete Star rescued him from imminent demise. With his robotic forces, Cooler launches a fierce assault on Gokuu and his allies, aiming to eliminate them for good.