It's Optimus Prime's darkest hour(s)! On the run from Autobot and Decepticon alike, he faces the most harrowing decision of his life. To save himself, and deny Megatron his greatest victory he must abandon the wounded and dying Outback. Can he do it? And if not, is this finally the end for Optimus Prime? This epic adventure also features the story of what happened to Optimus Prime, Prowl and Ratchet during the Target:2006 saga.