Megatron, Trixie and Starscream are humilated after being defeated by The Enforcers. But when they meet up with King Sombra, they finally figure out how the Enforcers are strong: Working together. So Megatron and the 3 foes team up in order to assemble the very first villain team, named The Grounders, as they set out to finally take down the Enforcers
