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—and when she faces execution for such blasphemy, it's only the intervention of a drunken, taciturn and incredibly violent Slayer that saves her life. Now bound to Gotrek Gurnisson by a life-debt, Amara finds herself caught up in his quest for revenge. But when the duo become aware of a sorcerous threat building on the far Rocanian Coast, Gotrek and Amara must put aside their own desires for retribution 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.