In the near future, Ueno is a man who has been raised with his parents' cyborg maid Maria. His parents pass away while he is a teenager, leaving Maria to care for Ueno. As an adult, Ueno's attachment to Maria leads him to attempt to program her for sex. This attempted consummation of their relationship fails, and when Ueno is an old man, Maria's power supply comes to an end, leaving Ueno
