The fallout from the devastation on Earth ripples outward, all the way to Nebulos, where GRIMLOCK faces his own dark demons and a fateful choice that may cost him his very Spark. The dark reign of SCORPONOK begins here, and nothing will ever be the same again!
Transformers Regeneration One Volume Two contains issues 86-90. Last volume Optimus Prime took a team of Autobots to Earth to battle Megatron leaving the inexperienced Hot Rod in command on Cybertron. During this time, Scorponok appears with intentions on taking over Cybertron by enslaving the Autobots and forcing the Decepticons under his command.