Entirely silent, with a musical score, sound effects and incoherent mutterings, the story revolves around a weekend gathering at the decaying country home of the eccentric and lewd General Futtock (Ronnie Barker) and the series of saucy mishaps between the staff (Michael Hordern plays the lecherous butler) and his guests.

After her young son accidentally drowns, a woman has a breakdown and is finally placed in a mental hospital. After her release, her husband takes her for a weekend at a secluded country mansion, hoping to help her recover. However, things at the mansion aren't quite what they seem to be, the couple begin to feel an uneasy and oppressive presence, and the mother starts to see things that may, or may not, be hallucinations.