The gang at Angel Inc. works to save a group of demon refugees and soon find themselves in the middle of a war. An evil band of demons, called the Scourge, is in LA. They're determined to wipe out all the "impure" demons and humans that they can find. When the Scourge unleashes a deadly weapon Angel, Cordy and Doyle are faced with an impossible decision and the ramifications from it will change them forever.