Some secrets are better left in the past.

Summer, 1940. Before the German occupation during World War II, the Marquand family flees their home in the English Channel and never looks back.

Summer, 1983. The once-opulent Idlewild Mansion is crumbling and derelict. 18-year-old David Simeon dreams of Idlewild years past; in his dreams, he sees a young girl endlessly wandering its corridors.

Soon, the threads of past and present begin to intertwine. But what is the connection between Simeon and the shadowy old mansion, and is it too late to stop the darkness that still dwells there?