When Liv’s boyfriend Kit disappeared on a hike, seven years earlier, she thought her life was over. But with the help of their family and friends, she’s pushed her way through the grief, and now, miraculously, she's found a way to love again.

Until the morning of her wedding, when Liv steps through a doorway, and finds herself, somehow, back at the flat she shared with Kit: seven years earlier, six days before he left. Now, Liv has a chance to live those six days over, and change everything. If she gets this right, she can find out why Kit leaves and stop him.

But can she save him? And if she does, how will she choose, between the man she loved then, and the one she loves now?