French supernatural horror. Chloé Coulloud stars as Lucy, a young woman who, haunted by the death of her mother, feels that she is going nowhere in life. On the first day of her latest dead-end job as a home carer, she is taken to a strange old house and introduced to a comatose patient, former dancer Mrs Jessel (Marie-Claude Pietragalla). Lucy discovers that Mrs Jessel is rumoured to have a stash of treasure hidden somewhere in the mansion. When Lucy tells her boyfriend, William (Félix Moati), this story, he persuades her and his brother, Ben (Jérémy Kapone), to accompany him to the house that night to find the treasure. But their hunt soon leads to terror as their actions trigger a series of horrifying supernatural events.