#18 has gone to Mr. Satan's house to collect on the 20 million zenni prize money he ows her for letting him win the Tenkaichi Budoukai. Mr.Satan claims that the money hasn't been turned over to him yet. Then, a minion of a man who was a classmate of Satan's arrives. He plans to blackmail Satan into going with him to fight bio-tech warriors. The minion then threatens to tell the papers that Satan was a bed wetter in 6th Grade. Satan caves in and Goes. #18 goes along to keep Satan from running away.

Goten and Trunks sneak in the back of the car to try to fight the bio-tech warriors, and Krillin is forced to take his daughter back to Kame House. Baron Jagaa Badda created the super powered pro wrestler warriors, and he wants them to fight Satan, just to put Satan back in his place. Satan pretends that #18 and the two boys are his students, and they easily destroy the bio-tech warriors.

Goten then recognizes the guy standing beside Jagaa as being the Shaman from the forest village in the last movie. It turns out that the Shaman collected some of Brolli's blood at the battle site, and sold it to Jagaa. Jagaa had his scientists use the blood to create the Ultimate Bio-tech Warrior. At this time Brolli is activated. Trunks and Goten try to use Kamehamehas on Brolli's container before Brolli can awaken, but it is too late. However, the process isn't complete, and Brolli is badly misformed.

There is much fighting, the chemicals used in the bio-tech process get loose and eat up all living things, and Brolli trashes Goten, Trunks, and #18. Krillin arrives to protect his wife, and also gets trashed. Finally, the heroes rescue the scientists, and all of the people living on Jagaa's island, and they escape onto ocean liners. The bio-tech chemicals try to eat Brolli, and are instead turned into an energy source for him. Ultimately, Goten discovers that the chemicals loose potency in sea water, so Krillin, Goten, and Trunks use a Kamehameha to create a tidal wave that cleanses the island. Brolli keeps trying to kill Goten, but is now vulnerable to Goten's and Trunks' energy blast. Brolli is finally killed! Mr. Satan tries to swim back home, rather than accepting #18's offer of saving him for a total of 1 Billion zenni.