Someone wants Starscream dead, and they are Megatron and Shockwave. Meanwhile Wheeljack has bad news for Grimlock, Snarl has Corrodia Gravis, meaning he'll rust to death if he doesn't receive a systems boost from a compatible Transformer, that Transformer is Starscream. Starscream seeks out Soundwave, and beats the crap out of him until the Mayhems show, along with the Bots who are there to get Starscream. Then Shockwave and Megatron show up to gum up the works. It gets really ugly, but the Bots manage to beat the Cons and save Starscream.