Operation: Bumblebee, Part 2
Still feeling guilty about failing to repair Bumblebee's voice box during the war, Ratchet offers to give Bumblebee his own T-cog via transplant. While Optimus, Bulkhead and Arcee are out retrieving another Iacon relic, the Forge of Solus Prime, Agent Fowler calls the base with news about newly discovered coordinates of a M.E.C.H. hideout. Seeing an opportunity, Bumblebee storms the hideout to get his T-cog back.