Transformers: War for Cybertron - Aerial Assault/One Shall Stand

Aerial Assault-
The core is too damaged by Dark Energon to sustain life on Cybertron, in order to repair itself, the core must shut down for million of years.
Carrying the power of the Matrix of Leadership inside him, Optimus Prime must sadly order the evacuation of the entire planet if the race of Transformers is to survive.
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One Shall Stand-
The orbital cannon is offline, but has revealed it's true form to be none other than a savage monster named Trypticon.
It races to the planets surface like a meteor, hungry to enact revenge on the Autobots.

Trypticon is defeated--but the victory is bittersweet. Optimus and the others watch as their brothers evacuate the planet in the galactic transports.