Dragon Ball Z Episode 278
True Saiyans Fight Alone
With the Earth erased from existence, Majin Buu goes on a manhunt for Goku and Vegeta that leaves a string of destroyed worlds in its wake. But when Buu’s search leads him to the Great Kai Planet, Goku and Vegeta draw the line! The Super Saiyans lure Buu away by raising their power levels and disclosing their whereabouts, thus setting the stage for the battle of all battles!