Episode Description : Bulkhead, Arcee, Jack and Miko investigate an old Decepticon Energon mine that was supposedly stripped clean. Megatron and Starscream arrive shortly after, with the former accusing the latter of hoarding Energon. Interrupted before he can commit murder by Jack and Arcee, Megatron opens fire and collapses the mine, burying everyone inside, and Bulkhead must rescue Miko before she runs out of oxygen.