The annual soapbox derby is coming up, and Tommy, Gus and Lola each build a car to compete. Kurt enters the race too, with an armed car used to attack Tommy. When things are looking bad for Tommy, a mysterious racer...
It's Donnie's birthday and sensing that it's a good opportunity to capture Robotboy, Dr Kamikazi, Bjorn Bjornsson and Kurt's father all decide to invite themselves! Robotboy is under more threat than he could imagine....
While out bowling, Tommy, Gus, Lola and Robotboy are challenged to a bowl-off by the villains Dr. Kamikazi, and Klaus von Affenkugel. The game becomes a lot more interesting when Gus bets that the winner will get Robotboy.
Robotgirl arrives at Tommy's with memory damage a distress message from Moshimo. Tommy and Robotboy get her to remember Moshimo's location, and they go off to save him. However, it's all a trap set by Protoboy!
Tommy must get Robotboy back to Professor Moshimo to help fix him before someone attacks! Kamikazi latches onto the situation and follows Tommy, Lola and Gus to Moshimo's secret home. Kamikazi summons his hench-yetis...
Donnie destroys Tommy's treehouse, so Robotboy builds him a new high-tech treehouse. The kids are so attached to it that Robotboy attempts to shut it down, but the new intelligent treehouse fights back before Robotboy can.
Tommy ends up being challenged to a fight. He asks Moshimo for advice, and he says Tommy can synch Robotboy's fighting moves with his own body. Tommy is winning the fight, but Constantine attacks Robtboy, which puts the...
Robotboy discovers that he has a long lost brother who was captured by Kamikazi at a young age. He was turned too evil even for the evil doctor himself. Robotboy believes he can be fixed, which leads to unexpected havoc.
Kamikazi sends henchmen to Tommy's school disguised as teachers! Tommy figures this out and tries to send Robotboy back home, but his metallic friend wants to stay for dodgeball in gym class. The game is where they try...