A group of college friends rent a smart house for a weekend of partying. Later, they start to realize that Margaux, the house's super advanced AI system, has sinister designs for them.
Single mother Elaine is disturbed by her son Martin's aggressive behaviour, she visits his late father's estranged family in small-town Luxembourg, which hides a much darker nature. When she realizes that Martin could become like them, Elaine is forced into a desperate fight for her son's future.