Episode Title:
Shadowstriker.
Episode Description:
Bumblebee recalls a memory of his arch-enemy, Shadow Striker. During the war back on Cybertron, Shadow Striker and her team inform Megatron that they have captured Optimus Prime. Bumblebee, having followed them, frees Optimus before engaging Shadow Striker, with the skirmish ending with the Autobot scout firing a stray shot at a large pile of explosive Energon, the resulting explosion taking the Decepticon with it...
