It's a perfect evening on the night that throws a wrecking ball into Abby's life. Bored of her daily routine and loosened up by wine at a dinner party, Abby finds herself going along with best friend Sienna's plan for their husbands to swap homes for the night. "How funny would it be--just for fun. Just to live a different life for a few hours. That's all!" But when something happens that night with Sienna's husband, Greg--something that neither Abby nor Greg can take back--Abby is desperate to tell her husband and Sienna the truth. But with Greg holding a huge secret over her head, she finds herself silenced. Then the unthinkable happens...Greg suddenly disappears. Is he simply running from his secrets? Or has Abby done something terrible, in order to protect her own?