Tomiko falls in love with Niitaka, even though she also suspects him of being the Tokyo bus driver serial killer, who killed his female conductors after tiring of them.
A young man kills his bride on the day of his marriage and goes insane. He wakes up in an asylum with no memory, left in the hands of two mysterious doctors who relate his condition with his biological identity.
After the death of their father, a brother and his sister return to their family home on a secluded island. They are accompanied by the brother's girlfriend. Problems arise when it becomes obvious that the two siblings have carnal desires for each other as well.
