Lord Edward Mondall II, grandson of Lady Krystaline Mondall, follows in her footsteps by setting Nergal the Destroyer free of his captivity in the arms of Druantia, the Spirit of the Trees. Nergal, Maeve Darke who was also set free from her captivity, along with the Spirit of Yfel, author of Ye Grimoire of Yfel, and a host of foul creatures engage once again in attempting to destroy the human race. Edward learns in his grandmother's diary that only the Silver Sword of Deliverance can harm the demon, subduing his evil. The catch: Edward doesn't know where the sword is hidden. He also discovers that his friend Wally has been possessed by the Knowledge of the Spirit of Yfel. The plot thickens further when Edward's girlfriend Phyllida becomes a target in Nergal's thirst for world domination. The chase takes them to various locations, including the Taupo Super Volcano in New Zealand.