Jessica, Nick, and their daughter, Alice, relocate to the countryside, hoping to leave financial struggles and family conflicts behind. The family take in a lodger, Sian, who befriends Jessica and Alice but triggers suspicion in Nick.As seeds of discord are sown and quickly bloom to reveal dark secrets, Alice and Sian grow closer, but Sian's troubled past could be edging the family towards a disastrous future, and in a race against time, Jessica and Nick must fight to preserve everything they hold dear…