Callie Evans is named after a muse from Greek mythology. Little does she know she is actually an angel, an Arc sent from Heaven to do battle with Darks on Earth. Her specific targets are Raysers, demons who prey on the souls of teens. Callie’s mind has been Cloaked for the past sixteen years, so she has forgotten who and what she really is. On her sixteenth birthday, all she really wants is a cell phone and a date with Joshua Pride, the super-hot new guy at school who harbors a secret of his own. Instead, Callie is visited by Silas and Jules, a pair of outlandish Micro Angels whose job it is to coach newbie angel warriors in training. The gift they bear is her true identity. While the rest of the world grows up and moves on, Callie will stay sixteen forever, a permanent structure on the teenage social scene. After all, this is precisely where the battle between good and evil is being waged, and she is a highly sophisticated weapon. Now, Callie isn’t sure whether her biggest problems are the stinky demons she must seek and destroy or the celestial law stating that Arcs are meant to be solitary soldiers. Her unexplainably magnetic attraction to Joshua and the fact that he seems to dig her right back is also a source of confusion for Callie. Should she allow herself to get close to him if he is ultimately going to forget her after a year or so passes, and what is it about him that draws her in and steals her senses? Will she be able to fall for Joshua without falling into the ha