The Autobots locate the Allspark, but a deserted space station and its lone occupant stand in the way. The Decepticons catch up with the Ark.

Optimus encounters an unexpected guide who shows him a possible future. Megatron meets an entity who tells him what he needs to take from Optimus.

Believing the Allspark destroyed, Megatron plans to flee the dying planet — but at great cost. Elita’s plan to free some prisoners hits a snag.