Swoop arrives ahead of the other Dinobots and Ratchet and discovers a Decepticon controlled Autobot by the name of Guardian. Guardian gives the Dinobots a severe thrashing until Ratchet acts to stop the droid using its weakness. With Wheeljacks' help, they track down the droid... but the Dinobots have already found him, and what's worse is that Guardian is a literal bomb, ready to go off.