Having become Emerald City’s de facto defenders following the so-called “Silver Storm” the heroes have discovered the Storm was the work of an alien artificial intelligence known as Tellax. Tellax is able to control the super-powered “stormers” created by its microscopic nanites. With the assistance of their ally and patron, Maximillian Mars, the heroes have constructed a prototype jamming device to override Tellax’s control. Mars is already familiar with the alien nanotechnology, having used a sample of it to become the super-villain known as “The Commander” some years ago, before his eventual retirement.
At the end of the previous adventure, just as the heroes are attempting to complete the jamming device, Tellax transports them to a distant alien world. The artificial intelligence wants the heroes to witness first-hand the reason for the Silver Storm and Tellax’s efforts to date: the onslaught of the cosmic menace Collapsar the Devourer!