Quick recap
Vegeta knocks Goku out from behind to face Majin Buu alone and, unable to win, sacrifices himself in an explosion. Buu pulls himself back together. Gohan is presumed dead, but he's on the Supreme Kais' planet, where he pulls out the legendary Z Sword. Goku teaches Goten and Trunks the fusion dance and, to buy time, fights Buu as a Super Saiyan 3 before returning to the Other World. Buu destroys cities with Babidi until he kills his own master. Mr. Satan tries to beat him and, by accident, becomes his friend, and Buu adopts a puppy. When two gunmen shoot the dog and Mr. Satan, Buu's rage makes something terrible come out of him.
No spoilersOpens once you mark the title as seen.