Regeneration

S2, E25: After finding out that Starscream killed Skyquake in the first episode, Dreadwing offers the forge of Solus Prime to the Autobots. As Megatron's forces arrive on Cybertron, Optimus Prime uses the forge to upgrade the ground bridge into a space bridge. Armed with every Iacon relic they have, the Autobots head to Cybertron to find the omega lock, the machine needed to restore Cybertron with the omega keys.