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.
Fame is causing a rift between the Lab Rats, but they must put aside their differences to stop Krane from taking over the planet.
With bionic Victor Krane’s help, Davenport’s evil brother Douglas has enabled the Triton app and gained control of the Lab Rats. Can they override it and free themselves?
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.
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.