The story takes place in a huge gloomy manor. Mr. Bowdy (played by Lee Ving) is the owner of the manor. He invited six guests to his manor as guests. They are Professor Prum (Christopher Lloyd). Christopher Lloyd), Mr. Green (Michael McKean), Mrs. Peacock (Eileen Brennan), Mrs. White (Madeline Kahn) and Mars Colonel Tad (Martin Mull).
Just as the six people gathered in the hall, the lights suddenly went out, and when the light came again, what appeared in front of them was the corpse of the owner of the manor, Mr. Bodie, which also meant that it was here. In the manor, there is a cold and bloody killer hidden. The six guests joined forces to try to find the killer, and in the process, people continued to be killed. Where is the real murderer hiding
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