Serafina receives an invitation to the prestigious St. Michael's Academy, a school secluded in the mountains and known for their wealthy and influential graduates. Behind closed doors, she learns of an elite faction of students: demons who train in secret to strengthen their powers with the hope of one day taking back the Earth from humans. Against them stands a lone Arch Angel who has spent the past millennia hunting and killing the survivors of the Fallen descendants.Sera must decide where her loyalties lie: with the human world, or those who wish to destroy it. Each side claims her as the key to victory, yet neither will give her the answers she seeks. Along the way she learns about the power of choice, and how even a demon could benefit from a touch of humanity.