No Pants Girls is a 3 segment film directed by Sono Sion, Shô Tsukikawa and Reiko Saito. They deal with girls discovering sexuality, through their innocent eyes. The actors and actresses are the same in the three films.

Tokio (Shugo Oshinari) and his sister Sui (Shiina Eihi) fall in love.

A young woman works as a waitress in a diner. Her relationship with her boyfriend is unfulfilling and to further complicate things she is obsessed with a large hemangioma, or benign vascular tumor, on her hip (one that we actually never see). One day after she encounters a mysterious man wearing a hood and playing a clarinet she discover a small shack built out of cardboard. She crawls into it and suddenly we are transported to this young woman's interior world, a place where she meets her own doppelgänger in the form of a large doll who bears the same birthmark on her hip.

Hana is a nineteen-year old expectant mother. She travels with her grandmother's ashes to her grandmother's house. Hana's mother, who gave birth to Hana when she herself was a teenager, now resides in the home. They are on the outs with each other, but are forced to stay with each other when Hana's boyfriend fails to show.

A few years ago, when Tomomi (Hiroko Akune) was on the way home from school, she saw her friend Keiko (Misaki Mori) about to be raped by a man. Tomomi hit the man in the head with a stone and saved Keiko. In the present, Keiko, has buried her past, sells her body in Tokyo. One day, Keiko is contacted by Tomomi. They haven't spoken since their high school graduation. They meet and Keiko lets Tomomi stay at her apartment. Soon, the bizarre lives of the two women begins, with Tomomi also selling her body.

It is 1980. Sadatomo is at a secondary school in a small town. His parents barely take any notice of him. The strict teacher Kobayashi has hung up a 'humanity index' in the classroom, divided into the categories 'delinquents', 'scum' and 'people'. In each category he has hung name-cards of pupils. One day Kobayashi finds out that Sadatomo and his friends have stolen some things from a shop for fun. Their fathers are informed and as punishment, the children have to write a 'self-critical' essay of no less than thirty pages. For the first time, Sadatomo is beaten by his father. Shocked, he writes a piece entitled 'I am an onion', in which the teacher thinks he can detect a first sign of humanity. That is the start of a confusing situation in which it gets hard to distinguish lies, truth, justified self-criticism and opportunist wheeler dealing, even for the boys.