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.

Robby backs out of Alex's traditional Wakwak hunt, so Alex shares his family history with Bumblebee, while Twitch, eager to gain her own traditions, encounters "Dad2" - Wheeljack.

Twitch helps Hashtag choose her alt-mode, and it takes them both for a wild and G.H.O.S.T.-ly ride that Bumblebee must help them escape.

When Nightshade's feeling isolated from the rest of the Malto family, they find a new connection in the most unlikely of places.

Robby and Mo join the Terrans on a visit to the Spacebridge Memorial Park, but the memory of the siege opens old wounds...and more...for Megatron.