As SCORPONOK targets KICKER, convinced that he can fast-track their ENERGON program, so OPTIMUS PRIME faces off against UNICRON'S Four Horsemen on CYBERTRON. Trapped, outgunned, PRIME can only wonder helplessly at the fate of Earth. Unless, that is, he and his fellow AUTOBOTS get a helping hand from SIG OMEGA… and the Spark of Combination! From Simon Furman and Guido Guidi!