's premise involves a futuristic corporation sending shapeshifting cyborgs out into New Tokyo to collect "orgasm data" by means of sexual intercourse.

The title is a pun on the Japanese word iku (行く) which, in sexual slang, is used to express an orgasm.

She has sex with various people such as a salaryman and a stripper, a young couple, a drug dealer and a hustler named Akira and a former museum curator–cum-hobo.

Reiko is lured to a night club and seduced by Tokyo Rose, an agent of the rival Bio Link Corporation, who shuts her down with a computer virus and steals her data.

Reiko manages to obtain enough data to complete her mission by having sex with Akira the Hustler, a sushi shop patron and Mash.

Daily debates ranged from issues such as foreplay and sexual positions to fist fucking and penis size.

[3] Pornographic actress Mai Hoshino was hired for the lead role, Reiko, but disappeared three days before shooting began.

Instead, seven actresses were selected and the lead role modified to incorporate the shapeshifting element, allowing the contentious hardcore scenes to be meted out between the seven.

Cinematographer Tetsuya Kamoto, well known for his music video photography, refused to include himself in the onscreen action, hamedori style.

[1] According to director Shu Lea Cheang, approximately 40 percent of the audience walked out over the course of the film, predominately during the sex scenes.

The exodus was not repeated at subsequent screenings when Cheang "spelled [the film] out and challenged the audience to stay.

[6] Phil Freeman wrote: "It's clear that the filmmakers felt the addition of a high-tech sheen would somehow vault their little movie (it's only 74 minutes long) above the morass of mainstream porn.

[9] The movie was released as a DVD in Japan in June 2006 by Up Link (アップリンク)[10] and in the United States by Music Video Distributors with the title I.K.U.