There's something strange going on at Deadlock House, a secluded French retirement home. The residents seem like nice people, but employees are disappearing and the whole place seems a bit odd. The boarders are vegetarian, the house director plays the same creepy tune on the piano over and over again, and one man, in particular, seems overly violent and aggressive. Unfortunately for Martine (Isabelle Goguey), the new staff nurse, she's about to discover the horrifying secret of Deadlock House... a secret so horrifying, she may not live to see the dawn.
When the caretakers at a remote retirement home in France begin disappearing without a trace, a newly hired nurse discovers that Deadlock House harbors a dark secret. Aside from their unique vegetarian diet, the elderly inhabitants of Deadlock House seem like your typical, bored retirees. But why is one particular resident growing increasingly aggressive, and what's with that that spooky song the house director keeps obsessively pounding out on the rickety old piano' The more newly arrived nurse Martine (Isabelle Goguey) learns about this bizarre retirement home, the more she realizes that she should have thought twice before accepting the job.