A four-part anthology in the spirit of The Twilight Zone, this film starts off with a group of commuters stranded at a train station in the rain, listening to stories told by one of the group. These include tales of a group stranded in the mountains and haunted by guilt over a death they inadvertantly caused, an emotionally broken chessmaster pressed into playing a real-life game for an eccentric millionaire, a wandering medieval samurai who finds a modern-day cell phone on the ground and a person on the other end asking questions about the past, and a young couple who agree to try a computer simulation of what their future as husband and wife would be like.

Consisting of 5 stories: 1. Extra Synopsis: A man decides to go against a society whose every action and exchange of dialogue has already been prewritten in the screenplay of life. 2. 13-banme no Kyaku (Guest no. 13) Synopsis: A short-tempered man gets his hair cut at a strange barber shop only to find that he cannot leave before going through a certain process. 3. Black Room Synopsis: A son returns home from America to find his hometown shrouded in black and his parents behaving very strangely. 4. Boku wa Tabi o Suru (I'm Taking a Trip) Synopsis: A man’s older sister goes on a trip without realizing the terrifying truth. 5. Otona Juken (Adult Test) Synopsis: A young man must prove that he is truly an adult through a series of real life scenario tests.

Three apparently unrelated suicides occur on the same day in Tokyo. One involves a young athlete, one a groom at his wedding reception, and the third an elderly man celebrating his wife's birthday. A middle aged detective investigating one of the cases begins to suspect a connection between the three when he discovers that each person mentioned a "green monkey" before they died. With the help of a young psychiatrist he formulates the theory that hypnosis is somehow involved. In the mean time other bizarre "suicides" are reported and the mystery intensifies. Who will be next? What is the truth? Can more deaths be prevented?

Infection takes place in a dark, isolated hospital, where one doctors mistake has led to dire consequences for a patient. In a hospital death is just a breath away.