Drawn by the exorbitantly high hourly wage of 112,000 Japanese yen, ten men and women gather at a mansion. Everyone thinks the simple psychology experiment will get them some quick cash... until one of them winds up dead. The participants are overcome with frenzied suspicion. Various deadly weapons are left in their rooms and they are killed off one by one.

A mysterious video has been linked to a number of deaths, and when an inquisitive journalist finds the tape and views it herself, she sets in motion a chain of events that puts her own life in danger.