Gotenks almost beats buu, defuses, gohan gets ilogical powerup and kicks buu's ass. Buu self destructs(Fake), gohan, goten and trunks run away.
Bu catches up with them, and tricks gotenks into refusing, then absorbs him, and beats gohan up.
Goku comes to save the day with magic earings that let him fuse with gohan, but buu absorbs gohan before he can put them on.
Vegeta shows up, Goku and vegeta fuse, Buu gets RoflStomped.
Vegito is absorbed by buu so he can resceu gohan, goten and trunks. They do, and escape. The also take fat buu out.
Buu turns into a kid, and blows up earth.
Goku, vegeta, Mr satan, dende and the dog use instant transmition to get to kai homeworld.
earth is revived with namekian dragon balls. ! revival per wish rule is scrapped because of frieza.
Buu follows them, goku fights buu, and gets a spirit bomb from everyone in the earth, and kills buu.
TIMESKIP!
Gohan and videl have a daughter, who enters a tournament, Owns some fodder, and goku starts to train some black kid who is somehow the reincarnation of buu.
Oh yea, and the series could have ended just fine at cell. Or freiza for that matter.