Six strangers face the ultimate decision: kill, be killed, or let a loved one die. Trapped in a dark, merciless room with implements of death, each stranger's true character is revealed as they are forced to fulfill the wishes of a cold and emotionless social scientist, Dr. Kasuma. Only one will survive. With each death, the survivors are one step closer to freedom, but still only one move from death. Sometimes to understand the masses, you have to sacrifice a few individuals.