Japan, 1989.

The era of the sukeban (delinquent girl) is at its peak. What was supposed to be Yumi Mimura's first day at her new high school, turns into the longest day of her life. When a schoolyard fight goes wrong, the girl-boss of one of the city's largest gangs is left seriously injured. Yumi, along with her newfound delinquent friends are all marked for death. Now every gang member within a hundred mile radius is out for blood.

As daylight fades, the girls must make a dangerous trek behind enemy lines to catch the next train out of the city. The city of Asura becomes a death trap as other gangs, yakuza, corrupt police and a vicious serial killer slowly circle in on them. Their skills are going to be put to the test as they fight tooth and nail to try and survive the night.

And the night is long.