Gotrek Gurnisson, the legendary Slayer, picks up a new accomplice - and faces a truly grotesque challenge in the disease-ridden spawn of the Plague God himself. Deep in the wilds of Ghyran, a former warrior priest preaches for humanity to reject the gods. The sole survivor of a massacred Dawnbringer Crusade, Amara Fidellus believes that Sigmar has betrayed her. But when she faces execution for such blasphemy, it's only the intervention of a drunken, taciturn and incredibly violent duardin that saves her life. Now bound to Gotrek Gurnisson by this life-debt, Amara finds herself caught up in his quest for revenge. But as they become aware of a sorcerous threat building on the far Rocanian Coast, Gotrek and Amara must put aside their own needs for vengeance to confront a terrible danger that could plunge all of Ghyran into Chaos, and see a deadly aspect of Nurgle's Garden manifest in the Mortal Realms.