In a grim future, Samuel Hyst has endured his life as a factory laborer, on the polluted planet of Baen 6. But when his wife reveals that she's pregnant, Samuel and his best friend, Ben Takeda, join the hazardous life of a salvage marine, the foot soldiers of a militarized deep space operation.

Samuel Hyst and the Tango Platoon have gone up against everything from space pirates and hideous mutants to the heavily armed elite troopers of Helion Corporation. However, nothing has prepared them for the horrors that await them in the darkness of the subterranean underworld of Vorhold.