Optimus struggles to obtain the Allspark. Megatron figures out Optimus’ plan and orders an attack on the Autobots, who receive an unexpected assist.

Megatron receives a surprise visitor; Shockwave reveals how finding the mythical Allspark can help defeat the Autobots. The Decepticons lay a trap.

Optimus has a plan but needs Ratchet’s help. Ultra Magnus is tortured for information while Starscream continues to foster dissent among the Seekers.

Elita casts doubt on Optimus’ plan, which includes fixing a Spacebridge. Optimus appeals to the Guardians for help and Bumblebee receives a high honor.

Jetfire offers to help Optimus retrieve the Allspark. Bumblebee, Cog and Arcee go on a mission for energon; Wheeljack tries to get the Ark to fly.

Megatron urges Optimus Prime to accept a treaty, while Starscream questions Jetfire’s leadership. The Autobots try to recruit Bumblebee to their side.