On the surface, Ruth & Christian seem like an ordinary working couple with two kids
- & a home in chaos. As the cracks in their marriage widen, they decide to get their very own super-nanny, Aggie. Quietly efficient, she brings calm & order, & the children adore her. But why is Aggie so eager to gain their trust? Is there something sinister about her effort to create the perfect family? & what is she really doing in their home?