Helljumpers. The name strikes fear in the hearts of even the most ruthless Covenant warriors. But when the Helljumpers respond to a call from a remote science colony, they soon discover that the colony is deserted, seemingly abandoned by every man, woman and child who once lived there. The lone body on the planet, a communications officer, appears to have died of fright. The discovery of a large Covenant military presence raises more questions than it answers. And when two Helljumpers get cut off from the rest of their squad, they'll have to battle through impossible odds to make it home