Bren wishes she had an instruction manual for angels who have been reincarnated -- or a guide to explain the visions that come with second sight. Unfortunately, only a handful of angels and their half-mortal offspring have this rare gift, and since they are forbidden from interfering with fate, she's had to wing it.Though they aren't pleasant, Bren's adjusting to watching images of her own death, and the massacre of the youngest angels, including her best friend, Tracy, when Lucifer attacked Heaven. Even being physically pulled back into the battle is tolerable, making Bren believe she can handle anything. She's wrong. After a vision shows Lucifer outside her Aeden home, followed by his son, Mortriel, killing other half-mortals, and taking their daughters to Purgatory; Bren does what any good guardian would do - she goes on a rescue mission.Armed with a lot of courage, and a handful of unproven weapons, Bren convinces a skeptical Tracy to go along. While her intentions are admirable, Bren's heroics may get them both killed again -- or worse - captured and taken to Hell.