Operation: Bumblebee, Part 1

The hunt begins for ancient Cybertronian relics hidden on Earth. One such relic is unearthed by Megatron and the Decepticons, which is revealed to be the Spark Extractor during the ensuing conflict. Later, while investigating an energy signature which could be another relic, Bumblebee is ambushed by M.E.C.H., who knock him out and steal his T-cog (the device that enables Transformers to scan alternate modes and transform).