Sion Sono

Near the end of the 20th century on Tokyo's Chuo train line, just before Hong Kong's return to Chinese control, masses of people go on a rampage, and love runs wild.

An aspiring hair dresser becomes the infatuation of a tricophilic man who sells hair extensions to nearby hair salons. The source of the hair is the corpse of a girl whose dead body continues to grow beautiful, voluminous, black hair that comes alive, driving those who use the extensions insane or killing them.

A teenager named Noriko Shimabara runs away from her family in Toyokawa, to meet Kumiko, the leader of an Internet BBS, Haikyo.com. She becomes involved with Kumiko's family circle, which grows darker after the mass suicide of 54 high school girls.