Leo & Adam team up for the school fitness challenge expecting Adam's bionics to be his secret weapon; the plan backfires when they end up going head-to-head in the finals. Meanwhile, Bree and Chase use their bionic abilities against one another.

When Leo accidentally messes up Eddy, an evil demon Teddy replaces him.

Chase and Leo enter a robot battling competition.

When the school mascot's Dingo costume is stolen by the rival team, Adam seeks revenge by taking their mascot, a llama. When Chase and Adam try to return the llama they discover that the animal has swallowed hundreds of Davenport's mechanical nanobots causing it to shoot acidic bionic spit.

Bree gets a part-time job at a tech-support store with Caitlin, but gets out-shined by Chase while he is talking to the manager of Tech Town, Scott. Chase sees how she feels later and they agree to treat each other with respect. Meanwhile, while Tasha is away visiting Grandma Rose, Leo and Adam make a turbo zip-line instead of doing the chores that Tasha gave them, with Donald joining them later. When Tasha finds out about the zip-line, she makes the boys do the chores and she hangs out on the turbo zip-line instead, much to the dismay of Adam, Leo, and Donald.

Chase loses the phone with a bowling video of him and Adam doing bionic bowling stunts at Tech Town while working. Leo and Bree try to get Principal Perry to spend her money when she retires after Donald gives her money and Trent becomes the principal and makes Leo's life miserable. It works in the end, but Principal Perry is broke and Scott fires Caitlin after she destroys an ePhone 7, the one that had Adam and Chase's bowling stunts on it, while giving them to the customers as revenge. Leo makes Trent wear a different uniform, but to Bree and Leo's shock, he loves it, much to their dismay.

Donald and the Lab Rats attend a fan convention about the movie, Alien Gladiators. The Lab Rats queue up to meet Andre Ethier, but Caitlin comes and makes them let her cut in line in front of them, getting the lost spot and meeting Andre Ethier. They fight with Caitlin and are thrown in a security holding area with a fanboy. Meanwhile, Leo and Donald are taking part in the Fire Staff Competition to get the walk-in role in the next Alien Gladiators movie.

When Leo is injured during a mission, Tasha rushes to the academy to take care of him. After finding out what happens on missions, she bans Leo from joining any more missions, but he disobeys her and goes on a mission with the rest of the team. When Tasha finds out, she kicks Leo off the team and tells him that he is moving back to Mission Creek.