Dragon Ball Kai

Babidi announces that he will have Majin Buu destroy the planet unless Piccolo, Goten, and Trunks are brought to them within five days. Piccolo almost sets off, but Goku convinces him to stay. He says they can bring back everyone who dies with the Dragon Balls. Supreme Kai, Kibito, and Gohan arrive in the Sacred World of the Kais, where Supreme Kai reveals he wants Gohan to master the legendary Z-Sword in order to defeat Majin Buu. Back at Dende's Lookout, Goten and Trunks wake up and are given a crash course in Fusion by Goku, after learning about the demise of Gohan and Vegeta.