They say true love lasts forever. But what if it really could?

Josh is 18. Rachel is 18.

From the first night they meet as freshers, Rachel and Josh know they are meant to be. An electric connection quickly blossoms into plans to spend the rest of their lives together.

Josh is 29. Rachel is 29.

Inexplicably, none of the men in Josh's family has lived past the age of thirty. As the fateful birthday approaches, Josh is wracked with fears: of his own death, and of leaving Rachel alone in this world. So when a genius scientist offers him a radical new treatment - which might just save Josh's future with Rachel - how can he possibly say no?

Josh is 29. Rachel is 31.

Rachel wanted nothing more than to grow old with her soulmate, surrounded by the family they longed for. Now, faced with the impossibility of that dream, she has a heartbreaking choice to make. Does the pursuit of happiness mean more to her than true love?