Other source:
Buu clears some space in the countryside and builds a house for him to live in. Trunks and Goten continue learning the Fusion Dance, and begin to master the technique. They each plead with Goku for him to show them the Super Saiyan 3 transformation, and because he knows his time is up, Goku complies. Soon after the transformation, Baba shows up to take him away. Goku says goodbye to everyone at the lookout. Once again, he is gone.
