[4] Dr. Akiba, a perverted scientist, has developed a series of gynoid Dutch wives (aka sex dolls).
Yuria Type 100 is his newest creation: she has highly advanced artificial intelligence and vast sexual knowledge, and the first doll which can imprint to her master for life upon having actual sex.
She ends up living with college student Shunsuke Kubo, where she tries to seduce him with the hopes that he can be her master, as however, he regularly refuses because he has a girlfriend and because he sees her as incredibly annoying when she acts like that.
Other Dutch wife gynoids soon appear, some of whom were also invented by Akiba, thus making them Yuria's sisters, and others from competing companies.
[5] Yuria is played by Shelly Fujii and the movie is directed by Hideo Jojo (Gachi-ban).