Jude, a misfit teen, has been burdened by her own mysterious ability to hear ghosts since early childhood. Ridiculed by her peers, she seeks refuge in a study-abroad program in England, unaware she is being hunted by demons and protected by a guardian angel, a Sentinel named Sam. Meanwhile Sam faces his own struggles: he would rather continue his 800-year search for his Soulmate, and has no idea that the woman he seeks is actually his very own, very vulnerable assignment.

Upon Jude and Sam's discovery of their status, and with mankind's survival hanging on Jude's significant fate, the archangels must work swiftly to separate the star-crossed lovers and prevent an unholy collision with Destiny.

Jude is left to answer two impossible questions:

What do you do when the only person you could ever love is forbidden by Heaven and Earth to be with you?

What would you give to get them back?