Julien visits his older sister, Sarah, who leads a cloistered life in a residential tower and no longer wants to see anyone. He discovers with terror that she has taken refuge in a hermetic world, surrounded by frightening terrariums.
When a housewife named Edith who loves to cook discovers a strange creature hiding in the home being built in her neighborhood, she decides to feed it. The only problem is that the creature is never satisfied.
Architect Frank awakens from unconsciousness: bloodied and squeezed into a portable toilet, he finds himself locked and barricaded. Frank quickly begins to realize that he has to find a way out if he wants to survive the next hour. It won't be a walk in the park.