Cobra Commander hatches his greatest plan of all - to wipe out electrical power on Earth. The resulting chaos is all he'll need to achieve his dream of world domination. First he needs to seize the G.I. Joe team's space station, then he has to place control cubes in remote locations around the globe: the City of the Dead, the Devil's Playground, the Mountain of Glass, and the Sea of Lost Souls. Battles explode in the sea and in outer space as the G.I. Joe team races to stop Cobra from raising a Pyramid of Darkness!