The student Evy Munro is suffering from lung cancer. But that's not her only problem, as her hated neighbor Vincent suddenly introduces himself as her personal angel of death, here to help her come to terms with her life. Although Vincent doesn't learn anything specific from his superior Azrael, he quickly suspects that there is much more behind this mission. When demon messengers appear and hunt Evy, he realizes that the demon lord Dantalion wants to bring war to the world. To do this, he must destroy Evy's soul, which, according to a prophecy, could prevent the creatures of hell from entering the Earth. But Azrael also needs her soul. Does she really have to be sacrificed to save humanity from the impending war? Is there no other way to stop Dantalion from breaking out?.