What happens when you're pulled into an alternate version of your life?

Luke Pearson is sure he's living his best life. He has the perfect job, he's engaged to his dream girl, and everything is status quo-just the way he likes it.

Then one night, everything changes.

After getting mugged and inexplicably losing consciousness, Luke wakes up to a world-and a life-that's not quite right. Not only is the love of his life engaged to someone else, but his best friend was killed in an unsolved hit-and-run ten years prior.

.....................

Since her brother's death, Erin Baylor's life and family have never been the same. But her commitment to duty keeps her on-plan, if not truly happy.

Then the sudden reappearance of Luke Pearson throws everything she's known into a tailspin, and she finds herself questioning the life she's carefully cultivated.

.....................

Desperation and grief mix as they join forces to search for a way to send Luke back where he belongs and to find answers to her brother's murder. But the answers end up being more than either of them anticipated, and something more sinister is at work behind every twist.