The Lab Rats set aside their differences and reunite to stop Krane and his bionic army from taking control of the entire planet. Meanwhile, Leo goes on his first official mission.

Fame begins to tear the team apart when Adam, Bree and Chase become celebrities. With a reality show crew, they go on a mission on national TV.

When Leo is chosen for a mission over Spin, Spin recruits Bob to join him on an unauthorized mission to prove themselves. Meanwhile, Sebastian tries to help Chase get revenge on Adam, but his intentions may not be true.

Davenport leaves Adam, Bree, and Chase in charge of the Bionic Academy while he celebrates his anniversary. Leo invites Janelle to the island, but gets distracted by his nemesis.

To his dismay, Leo finds out that he will be a student at the Bionic Academy, not a mentor like Adam, Bree and Chase. Chase engages in a battle against a former nemesis and Adam mentors a younger student.

Davenport lays in critical condition after a battle. In an attempt to save him, Leo risks his life to perform a dangerous bionic process. Meanwhile, after being deactivated from the Triton App, Krane's former bionic soldiers have nowhere to go and follow Adam home.

As Adam, Bree and Chase become celebrities, fame begins to tear them apart. The friction among the group becomes evident when a reality show follows them on a mission and things go awry. However, they must put aside their differences to stop Krane from his evil plan of taking over the planet.

When Adam, Bree and Chase discover that their new action figures are being outsold by another toy, they attempt to improve their toys by adding special features: bionic abilities.

Bree attempts to play a prank on Adam, but it goes awry right before her big date for the school's winter dance.

When Chase finally gets a girl interested in him, Adam gets jealous and sabotages their date by purposefully causing Chase to turn into Spike.

Douglas unlocks new abilities for Adam and Chase that escalate their battle of one-upmanship and disrupt the balance of power on the team.

Leo and Davenport attend fan convention and face off in an epic fire staff battle. Meanwhile, Adam, Bree, and Chase attend the convention dressed like their favorite "Alien Gladiators" characters in search of the movie's star. However, things take a turn for the worst when the gang lands in a security holding area with a costumed fan boy.

Leo can't resist showing off his new bionic arm in front of Janelle, but it quickly goes out of control. Agent Graham promotes the kids as bionic celebrities, but when they realize they missed a mission because of him, they decide it's time to get Davenport back as their leader.

Adam, Bree and Chase get caught on video using their bionics and the video goes viral, revealing their secret to the world. Government agents swarm the house and place Davenport and the Lab Rats on lock down.

Adam, Bree and Chase get caught on video using their bionics and the video goes viral, revealing their secret to the world. Government agents swarm the house and place Davenport and the Lab Rats on lock down.

After Leo sees a shark movie that terrifies him, Adam and Chase scare him by repurposing a Davenport Industries cyborg shark. However, the shark's artificial intelligence goes rogue, and Chase, Adam, Leo and Janelle find themselves trapped in the house.

Davenport's attempts at rebuilding Bree's bionic chip fail, forcing Leo to go behind his back and ask Douglas for help.

When Bree is accepted for a high school semester abroad program and Davenport won't let her go, she destroys her chip forsaking her bionic abilities.

Leo and Tasha are kidnapped by Krane, which sends Davenport on a rescue mission and sets up a showdown that puts Krane head to head with Adam, Bree and Chase.

Leo is determined to record the bizarre events he believes take place during a lunar eclipse. Davenport is skeptical until it appears that an alien life form has taken control of Principal Perry's body.

Leo's excited about his first high-end technological creation, a pair of attack orbs meant to protect the family, but when they can't differentiate between friend and foe, they create more harm than good. Meanwhile, Chase steals Davenport's Eddy technology to make a "Cheddy" app and win a Tech Town employee contest, but things go awry when the technology glitches.

Chase and Adam record themselves doing bionic stunts but then have to scramble to find the phone they used before their secret is exposed. Meanwhile, Leo and Bree scheme to help Perry spend her fortune.

Bree gets a part-time job at a tech store but is overshadowed by Chase. Meanwhile, Adam and Leo build a turbo zip-line in the house and find themselves in competition with Davenport.

Now that she knows their secret, Principal Perry pesters the team to take her on a bionic mission. When they stage a fake mission, things don't go as planned, and they have to save Mission Creek High from a speeding rocket.

Davenport tries to raise money for a new lab by attempting a death-defying stunt.

The lab rats become stowaways on a cargo freighter headed to parts unknown. They are forced to choose between helping a submarine in danger, which would reveal their location and put them in danger, or keeping quiet.

The lab rats are on the run as stowaways on a cargo freight headed to the unknown. Once captured by the ship's crew, they are forced to choose between helping a submarine in danger, which would reveal their whereabouts and put them at risk of being caught, or staying quiet.