Omega Convoy Once Again
The Autobots try to break into the control room to stop Cybertron getting through the Warp Gate, while Optimus looks for Unicron...
Aired 26/11/2004EP 47 - Omega Convoy Once Again

2004
Transformers: Energon
It has been 10 years since the fateful battle with Unicron. Many of the Decepticons who fought in the battle against Unicron have joined forces with the Autobos to mine for Energon, an alternate energy source. But a new source of evil has a risen, Alpha Q who plans to steal the Energon from the Autobots with the help of Scorponok and the Terrorcons. This new evil is trying to revive Megatron and Unicron in order to rekindle the old flames of war.
(Source: Anime News Network)