You have 18 months left to live . . . On a wet Monday in January, Jess Mount checks Facebook and discovers her timeline appears to have skipped forward 18 months, to a day when shocked family and friends are posting heartbreaking tributes to her following her death in an accident. Jess is left scared and confused: is she the target of a cruel online prank or is this a terrifying glimpse of her true fate?

Amongst the posts are photos of a gorgeous son she has not yet conceived. But when new posts suggest her death was deliberate, Jess realises that if she changes the future to save her own life, the baby boy she has fallen in love with may never exist.