Boo awakes as a dangerous obese creature that easily defeats Gohan and Kaiō-shin. Dabra tries to destroy him, but he is killed by being turned into a cookie and eaten by Boo. After knocking Goku out, Vegeta appears to defeat Boo, but Boo regenerates after receiving all of his attacks. When Boo tortures Vegeta, Trunks and Goten save him. Vegeta then knocks both of the children out and gives them to Piccolo, who returned with Kuririn to their normal state, to escape. Vegeta self-destructs in an attempt to kill Boo, but he manages to regenerate. Bobbidi and Boo start looking for Piccolo, Goten and Trunks by killing citizens. Goku returns to Kami-sama's place, where he decides to teach Goten and Trunks a technique to fuse their bodies and defeat Boo. Meanwhile, Gohan is taken by Kaiō-shin and Kibito, who was revived by Shenlong, to their planet to train with the legendary Zeta Sword.