After escaping Maras-Dantia, their chaotic birthplace, the survivors of the orc warband the Wolverines settled in Ceragan, a world populated solely by their own kind. Stryke, the band's leader, took native female Thirzarr as his mate, siring two male hatchlings. But by the time the oldest of Stryke's offspring was four, the band had grown restless with their bucolic life.

While hunting, Stryke and Wolverine sergeant Haskeer found themselves near the cave where the warband had arrived in Ceragan, and were shocked when an unknown human emerged. But the man was mortally wounded, a dagger jutting from his back.

A search of the corpse turned up an amulet bearing strange markings, and a gemstone.

The magical stone issued a message from Tentarr Arngrim, known to the Wolverines as Serapheim, the wizard who had made possible their escape from Maras-Dantia. It included images of orcs in another world being cruelly subjugated by humans, and to Stryke's and Haskeer's dismay they appeared not to be fighting back. Even more shocking, the architect of their oppression was shown to be Serapheim's malevolent daughter, sorceress queen Jennesta, the warband's old enemy and once their ruler.

Arngrim's likeness asserted that it was in the Wolverines' power to help these fellow orcs and exact revenge on Jennesta. To do so they would have to use the five mysterious artefacts called instrumentalities — known to the orcs as stars — which Serapheim had created and the warband still possessed. The instrumentalities allowed dimension-hopping, and perhaps more, and were the means by which the Wolverines had been transported to Ceragan. Had someone not murdered him, Serapheim's messenger would have acted as the band's guide.

Wanting to accept the challenge, despite his suspicion of Arngrim's motives, Stryke guessed that the symbols on the amulet showed how the stars should be fitted together in order to enable travel to other worlds. Gathering the scattered members of the Wolverines, he found they were as keen on the mission as he was.