Meredith Langston always longed to have children. She finally makes this happen when she adopts two young adolescent girls. However, her now idyllic world sours rapidly and dream veers to nightmare when she quickly finds that she is unable to cope with their increasingly strange behaviour. Desperate, she seeks the help of two journalists working for a local TV programme ‘SOS Adoption’. Unfortunately it is all for nothing, especially when the reporters discover that there is another presence in the house.

Jane and Simon are two young police officers leading a routine investigation following the discovery of hidden video equipment in an abandoned house by a night watchman. But the first filmed images go way beyond a simple holiday movie. The two investigators realize that they have to move quickly if they are to find out what has become of Steven, Stephanie, Olivia, Sam, and Sebastien... before it's too late.