As a shocking truth about a couple's families emerges, the two lovers discover they are not so different from each other.

The relationship of Tessa Young (Josephine Langford) and Hardin Scott (Hero Fiennes-Tiffin) has gone through many difficulties that have actually strengthened their union and their love. When the truth about their families comes out, they both discover that they are not as different as they thought. Tessa is no longer that sweet, good girl who made it to college, and Hardin is no longer the cruel, moody boy for whom she fell so hard. She is the only person capable of understanding and calming Hardin, but the secret he hides is so great that it causes her to withdraw from absolutely everything--even her soulmate.

It's never been all rainbows and sunshine for Tessa and Hardin, but each new challenge they've faced has only made their passionate bond stronger and stronger. But when a revelation about the past shakes Hardin's impenetrable façade to the core and then Tessa suffers a tragedy, will they stick together or be torn apart? As the shocking truth about each of their families emerges, it's clear the two lovers are not so different from each other. Tessa is no longer the sweet, simple, good girl she was when she met Hardin, any more than he is the cruel, moody boy for whom she fell so hard. Tessa understands all the troubling emotions brewing beneath Hardin's exterior, and she knows she's the only one who can calm him when he erupts. He needs her. But the more layers of his past come to light, the darker he grows, and the harder he pushes away Tessa and everyone else in his life. Tessa's not sure if she really can save him without sacrificing herself. She refuses to go down without a fight. But is she fighting for Hardin or herself?