As German bombs wreak havoc on West London, for Morgan's Dairy it's business as usual. But when owner Dai Morgan is killed in an air raid, his daughter Megan is determined to continue in her father's footsteps and she braves the ravaged streets alone to do his milk round by horse and cart.

Megan finds comfort in the knowledge that her twin girls are tucked away in a Welsh village, but she worries about her husband, Will, abroad with his platoon. And when Will's best friend, Doug Reynolds, returns, wounded and disfigured, she doesn't hesitate to take the poor man in. However, Doug is not the man she thinks he is. And when the boys come home, Megan has battle scars she can't allow Will to see...