Bumblebee and Optimus Prime rumble down the street, scanning for any hint of their Decepticon foes, when the ground begins to shake beneath their tires. It's Shockwave! The massive Decepticon splits open the earth and launches and all-out assault on the unsuspecting Autobots! The duo quickly converts to robot mode and opens fire with their plasma cannons forcing Shockwave underground and back into hiding!