Atlantis, Arise!

The Decepticons stumble upon a magnificent find: the legendary Atlantis. They believe that Atlantean forces could prove invaluable to them finally winning the war. Once at the surface level, the battle-hungry Atlanteans strike and strike hard. The Autobots face tough times and Washington, D.C. is next. However, while enjoying the sights, the Decepticons had better keep their own guard up around their supposed Atlantean allies.