Robby has trouble adjusting after their family's big move to the rural town of Witwicky, until he and his sister, Mo, discover the first-ever Earthborn Transformers.
Thrash is impatient with the family rules and convinces Mo to push their boundaries. But when a Decepticon needs their help, Mo and Thrash find themselves playing by a far more dangerous set of rules.
G.H.O.S.T. Special Agent Schloder pursues Twitch after mistaking her for a Deception. Meanwhile, Dot is put through G.H.O.S.T. orientation, where she learns that her employer's intentions may not be what they seem.
Robby backs out of Alex's traditional Wakwak hunt, so Alex shares his family history with Bumblebee; Twitch, eager to gain her own traditions, encounters "Dad2" - Wheeljack.
While out on a mission to capture three tricky tuneful Mini-Cassette Bots, Megatron and Optimus Prime have a disagreement about GHOST's treatment of Decepticons.
Twitch and Thrash wonder if they're the only two Terrans in the universe; with the help of Optimus, Bumblebee, Alex, Robby, and Mo, they relocate the cave of their origin.
With the birth of three new Terrans, the Malto family has grown. Meanwhile, Mandroid has captured Dot and Megatron. Can the larger group become a team and save their friends?
Jawbreaker wonders how to choose the right alt-mode. He interviews other bots on camera to hear their perspectives. But when Hashtag gets involved, Jawbreaker's project loses focus.
Robby's cyber-sleeve illness threatens his life, so Mo renounces ever touching the Emberstone. Quintus Prime shows Mo why she's the hero her family needs.
Optimus Prime suspects GHOST is hiding something, so he sends Bumblebee on a secret recon mission deep inside GHOST HQ. The young Maltos sneak in and assist their recently injured mentor.
