Two girls named Nana meet on a train to Tokyo. Nana K. aims to reunite with her boyfriend and Nana O. hopes to make it big in the music business. Despite their differences, the pair hit it off and become roommates.

The manger of cabaret club “Hanibani” named Shuu, a worker at the club named Koji and one of the patrons named Ken succeed in robbing a bank. They agree to divide the stolen money equally into 3, but they become consumed by greed and try to get more than their share. In addition, a renowned figure is after their money.