Clémentine is a teacher at the French School in Bucharest. She lives with her husband Lucas, who is a writer. They live in a remote estate in Snagow. During the night, Clémentine is awakened by weird noises outside the old house and Lucas sees their car being stolen. Then the lights in the house turn off, the phone line is dead and they see that their property gate has been trespassed and they are surrounded by weird persons with lights. The two hide in the cellar and try to escape to ask for help during this dreadful night of pure terror.