When a mysterious au pair enters Zoe's home with her own hidden agenda, Zoe is unwittingly propelled on a journey that will unearth a terrible truth and which will threaten to destroy everything she holds dear.

Tensions at a birthday party reach boiling point, leading to an injury and shocking revelations; Amber begins to question Sandrine's true intentions, setting her on a dangerous path.

Zoe embarks on a search for answers, but the more she uncovers, the more uncertain everything becomes; Sandrine reaches out with a desperate plea, while George guards secrets of his own.

The family is thrust into a confrontation that forces long-buried secrets to the surface. With trust hanging by a thread, Zoe must make a life-altering choice.