The Worlds Strongest
(Original Air Date: 03-10-90)

This would "take place" after the training with King Kai because Goku
uses the Spirit Bomb and uses the Kaio-Kan to win battles. In the beginning, Gohan and Oolong are climbing a mountain in an arctic like area to get some Dragonballs. More and more continually appear on the Dragon radar until all 7 are there. Then, we learn an old guy has summoned the dragon and makes a wish for the dragon to melt the ice so his mentor can get untrapped. Then, Oolong and Gohan run into Piccolo and they all are attacked by some short bio-warriors. Piccolo kills some of them, but some other bio-warriors surround Piccolo and Piccolo screams in pain until he disappears. Back at Master Roshi's house, Master Roshi and Bulma are captured and taken to a large facility in the arctic area. There, Master Roshi fights three biowarriors from Dr. Kochin (the same guy who wished his master back from Shenlong) who we learn is a scientist. Master Roshi fails and Bulma is chained up in the room with the old scientist. Bulma learns he has rescued Dr. Wheelo from the ice from his wish. We learn Dr. Wheelo is only a brain leftover from when they were hit by ice that caved in on their lair. She tells them if they're looking for the world's strongest person, then they should see Goku. Goku comes to save Master Roshi and Bulma but is ambushed on the outside of their facility by a large, yellow bio-warrior. He runs inside and survives through a trap of spinning,spiked balls. Goku then uses his Kaio-Kan attack to destroy the large bio-warrior. After that, two more  bio-warriors come after him and Krillin and Gohan come to help in the fight. Krillin and  Piccolo are electrocuted while Goku is frozen in ice by a bio-warrior. Goku breaks through  and destroys the bio-warriors. Then, they head to Bulma and Goku gets trapped in a painful mind  controlling beam. Goku breaks loose and is forced to fight Piccolo who's mind has been taken over by  Dr. Wheelo and the Dr. Kochin. Gohan is angered from what they did to Piccolo and powers  up in a surge of energy causing the mind controlling veins on Piccolo's head to break.  They all team up together and Dr. Wheelo breaks loose from the wall in a powerful giant  robot form.They learn that the robot Dr. Wheelo is too powerful and only Goku can stand  up against it. Goku defeats Dr. Wheelo and Dr. Wheelo decides he must destroy the earth  because Goku's too powerful. He charges up a beam and Goku charges up a spirit bomb.  Dr. Wheelo shoots Goku with a few blasts and Gohan and Piccolo fly up to fight Dr. Wheelo.  Goku finds the spirit bomb is still there and Dr. Wheelo fires a huge blast at Goku.  Goku quickly throws up the spirit bomb to counter the blast. The spirit bomb kills Dr. Wheelo and  they all meet together and laugh at Master Roshi.