Five more episodes from the first series of the CGI-animated franchise in which the Autobots and Decepticons return to do battle once again. This time around, Bulkhead and Arcee have to investigate a strange energy signal. The episodes are: 'Operation: Breakdown', 'Crisscross', 'Metal Attraction', 'Rock Bottom' and 'Partners'.

Five more episodes from the first series of the CGI-animated franchise in which the Autobots and Decepticons return to do battle once again. While Arcee and Jack have their hands full dealing with the crash-landed Decepticon Airachnid, Optimus becomes infected with a deadly Decepticon plague, the cure for which is hidden within Megatron's mind. The episodes are: 'Speed Metal', 'Predatory', 'Sick Mind', 'Out of His Head' and 'Shadowzone'.