A knock at the door shatters Kate Hemingway's life when she's informed of her husband Stuart's death in Afghanistan.
She struggles to care for their young son, George, with only Stuart's aloof best friend, Paul, as emotional support. Piece by fragile piece, she tries to rebuild her life, realising Paul and her son have formed an unlikely bond.
When Paul agrees to accompany Kate and a group of disadvantaged teenagers on a trip to the Yorkshire moors, he finally reveals something he's kept secret for years.
Kate's own scarred heart begins to open up. But can she risk her son's happiness as well as her own?