Fourteen-year-old Leo and his newfound siblings, a trio of superhuman teens, together learn to navigate a typical high school with not-so-typical bionic glitches.
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.
With bionic Victor Krane's help, Davenport's evil brother Douglas has enabled the Triton app and gained control of the Lab Rats.
Krane attacks Leo, Douglas and Principal Perry. Leo's arm is badly injured. It can't be saved so Douglas implants bionics into it. An epic battle with Krane ensues.
When the Lab Rats are caught on video using their bionics, the video goes viral and their secret is revealed. Government agents arrive and place the house on lockdown.