What happens in the last episode of dragonball z?

Goku has Mr. Buu magically rig the drawings so Goku can fight Uub in the first round of the World Martial Arts Tournament. Uub, a ten year-old human boy, is the reborn, purely good version of Kid Buu! But first Pan must face off against Wild Tiger in her first match. How will the energetic young Pan fare against her first opponent? And what does Goku have up his sleeve? Uub, growing stronger as the battle rages, is able to learn to fight during his match with Goku, soon becoming the Saiyan's equal! Neither warrior gives an inch in this fast paced, destructive battle. But before the match is decided, Goku makes a startling offer to Uub. With his plan revealed, Goku and Uub depart the arena leaving a stunned crowd in their wake.