Satoshi Inoue

In 1999, an enormous meteor crashed onto Earth carrying extraterrestrial creatures known as Worms within it. These creatures took on the identities of real humans and then killed them. In order to counter this new threat, ZECT was formed, who in turn created the Masked Rider System to combat the Worms. The battles lasts over seven years, depleting Earth's resources and turning it into a barren wasteland. By present time, power struggles in ZECT have caused a new group, known as Neo-ZECT, to be created. Souji Tendou, a man weilding the Kabuto Zector, decides to sell his power to either ZECT or Neo-Zect for unkown reasons.

Three high school students are running through their adolescence, feeling frustrated and empty at the reality of being 18 years old. The film depicts the three days of their lives, intertwining various episodes around a plot to steal marijuana that grows in a house's garden. They play mahjong, pick up girls, become gay, and no matter what they do, they cannot get enough.