Lauren Taylor is an ordinary girl with extraordinary friends. When her glamourous friend Emily invites her to her wedding, Lauren has no idea that an encounter with an irresistibly handsome stranger will shape her future. The gorgeous Henry Banville, 7th Duke of Brecktonshire, is a controlling and arrogant man, and when Lauren loses her way at the wedding and finds herself in his private quarters he has her removed immediately, despite feeling an intense physical attraction to her. Soon afterwards, Lauren loses her job and has to move from her rented flat, unable to pay the rent. In an effort to help, Emily tries to convince Henry to take her on as his Personal Assistant...and that's when things really begin to change.

A hundred and seventeen years ago, a demon offered a girl who was on the verge of death a deal. Having no other choices, she accepted and gained an almost immortal body. It was only when she got it that she discovered that immortality is nothing but solitude. For more than a century, she's been searching for clues to find him again, hoping that he can undo the deal. What will happen when she finds out the truth behind the deal? And will she fulfil her part of the deal?