Five more episodes from the first series of the CGI-animated franchise in which the Autobots and Decepticons return to do battle once again. Optimus Prime, Ratchet, Bulkhead, Arcee and Bumblebee face new dangers, including an invasion of miniature, metal-devouring robots; an ancient warrior named Skyquake; and an infiltrator trying to discover the location of the Autobot base. The episodes are: 'Masters and Students', 'Scrapheap', 'Con Job', 'Convoy' and 'Deus Ex Machina'.