Charlie is a robot controller who fights for money. Then one day he found out that he had a son and goes into court fighting against Aunt Debra about who takes care of the child.
Aunt Debra offered a lot of money for the child so the dad accept and took half the money as advance payment and gets to live with Max for a while.
Charlie used the money to pay some debts and buy a new robot. Max likes all these robots and decide to go with Charlie. After losing Charlie goes to the scrapyard to steal some parts and Max stole a robot.
Max came back in the morning washing the robot and found out that it was an old version. The robot could copy their movements. Then, they joined the tournament and named the robot Atom.
While they fought their way through, Zeus's owner, Farra, saw them and went to talk with them before their match. Farra wanted to buy Atom with a lot of money but Max refused.
Finally, when the battle had come they fought and won Zeus and taken first place. Now, Charlie doesn’t want Max to go the aunt Debra so he gave all the money given to him back the her. Aunt Debra was furious but Max lived happily with Charlie and Bailey.