Protagonist Rubin Card, an undead agent of the “Flipside” an alternate universe accessible via occupied graves or through the gory opened torsos of human hosts and not-so-human mutants. Rubin’s mission is to keep peace in the topside “real” world, exterminating cenobite-like creatures who slip through as well as keeping his nemesis, Bey sedated and confined to his own grave. Lately though, the attacks are increasing and the gas-masked militant Bey manages to escape and wreak havoc. Can Rubin stop Bey before all the portals to the Flipside are explosively sabotaged and before all the other mutant agents have been murdered?