One day, Son Goku was training as usual when he suddenly received a "call" from North Kai. The Grand Kai had asked Son Goku to wipe out a gang of cosmic thugs led by Bojack, who had been sealed on a planet at the edge of the galaxy.
It all began when North Kai attended the Underworld World Martial Arts Tournament held by the Grand Kai.
When North Kai attended the Grand Kai's Underworld World Martial Arts Tournament, his archrival West Kai noticed that he had come alone, without sending any souls under his command to compete.
He immediately sneered, "North Kai, I never imagined your talent pool had dwindled this badly. You couldn't find a single strong fighter in the entire North Galaxy? Hahaha, that's hilarious!"
North Kai snapped, "My North Galaxy has plenty of strong fighters. You know how Frieza, his father, and his brother were killed? That was the work of a fighter from my North Galaxy."
West Kai said, "The Frieza Race is nothing special. If Pikkon, the strongest fighter under my command, had been able to act, they never would've gotten the chance to run wild across the universe."
North Kai scoffed, "I don't think your Pikkon is all that impressive. Otherwise, how did he die? Surely he didn't die of old age?"
West Kai flew into a rage. "Whatever you say, my Pikkon is stronger than your fighters!"
North Kai said, "He was killed."
West Kai said, "Pikkon could wipe the floor with the Frieza Race."
North Kai said, "He was killed."
West Kai snapped, "North Kai, is that all you've got to say?"
North Kai said, "He was killed."
West Kai roared, "If you've got the guts, bring your fighter here to face Pikkon!"
North Kai grinned smugly. "My fighter's reputation is