Leo is an ordinary teenager who has moved into a high-tech "smart'' house with his mother, inventor stepfather and Eddy, the computer that runs the house. Leo's life becomes less ordinary when, one day, he discovers a secret underground lab that houses three experiments: superhuman teenagers. The trio -- Adam, the strong one, Bree, the fast one and Chase, the smart one -- convinces Leo and his parents to let them leave their lab and join Leo at school, where they try to fit in while having to manage their unpredictable bionic strengths. As Leo figures out a way to keep his new pals' bionic abilities a secret, they help him build self-confidence.
The peaks and the valleys. Find the essential episodes — and the ones to skip.
Giselle reveals she dug up Marcus from Douglas' old lair and rebuilt him, piece-by-piece. Marcus wants revenge on Douglas for leaving him to die. Everyone rushes Giselle and Marcus, but Marcus knocks everyone unconscious. Donald and Douglas are tied together in chairs, while Adam, Bree, Chase, and Leo are put in the chamber with the students, while Daniel is pulled out.
Chase and Douglas reanimate a prehistoric sea spider. It escapes and bites Adam, which poisons him. It then grows and becomes 50 feet long due to growth hormones that had been given to it by Douglas. Everyone tries to stop the spider so they can create a cure for Adam.
The Lab Rats plan to gain good publicity by having cameramen film them during a mission, but it turns into a disaster when they fight for screen time. After the mission, the president orders the team to stay away from the public in order to let him settle things down. However, it goes wrong when Leo and Principal Perry are holding back angry protesters who want the Lab Rats gone, and Leo accidentally uses his bionic arm. As the protesters become even more enraged, they try to storm the house; Adam panics and uses his bionic super breath to blow everyone off the premises. However, Chase criticizes Adam's actions and the Lab Rats start fighting. They eventually decide to break the team. Three weeks later, the Lab Rats refuse to talk to each other, but they are forced into action when Krane plans to use his Triton App on everyone in the world. A large battle ensues, pitting Leo, Donald, Douglas, and the Lab Rats against Krane and his bionic army. Most of the soldiers attack Adam and Bree, who manage to take them out. Chase has a one-on-one battle with S-3 and Leo has one-on-one battle against S-1. Donald and Douglas attack the soldiers surrounding the satellite, but Krane keeps them from getting too close. Eventually, the Lab Rats and the rest of the team manage to hold back many of the soldiers, but they are running out of time to stop Krane. Douglas then reveals that the Lab Rats can fuse their abilities to stop Krane. They succeed, blasting Krane into the sky and breaking his control over the soldiers. However, their victory is cut short when they find out that Donald is in serious condition after the battle. Later they find out that after the surgery, Donald is still in a very delicate condition. Leo is made an official member of the Lab Rats and gets an upgrade to his bionic arm.
Chase gets a girl interested in him, but Adam gets jealous and tries to ruin their date by having Chase turn back into Spike. Meanwhile, Leo and Bree suspect that Principal Perry has murdered a cook from the cafeteria and Donald. They then find out it was about a hamburger truck and they misunderstood everything.
Each point is an episode, plotted in order. Colored bands mark season boundaries. Look for the rise, the plateau, or the decline.
High votes + high rating = beloved classic. High votes + low rating = notorious stinker. Low votes + high rating = hidden gem.
One point per season. Smooths out the episode-to-episode noise to reveal the bigger arc.
Did each season build or fizzle? Green means the finale outscored the premiere. Red means the opposite. Longer arrows, bigger swings.
How steady is each season? Tightly clustered dots mean reliable quality. Scattered dots mean a wild ride.
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