Movie Story : When California mother Samantha and her daughter Blake welcome Chloe, a British foreign exchange student, into their home, the two teenagers quickly become inseparable. Samantha's unease grows after Blake's boyfriend dies under mysterious circumstances. Determined to clear her daughter's name, she digs into Chloe's past and uncovers a far more disturbing scheme: Chloe intends to take Samantha's place as a mother figure.