In 2054, Paris is a labyrinth where all movement is monitored and recorded. Casting a shadow over everything is the city's largest company, Avalon, which insinuates itself into every aspect of contemporary life to sell its primary export -- youth and beauty. In this world of stark contrasts and rigid laws the populace is kept in line and accounted for.
A case of mistaken identity lands Slevin into the middle of a war being plotted by two of the city's most rival crime bosses: The Rabbi and The Boss. Slevin is under constant surveillance by relentless Detective Brikowski as well as the infamous assassin Goodkat and finds himself having to hatch his own ingenious plot to get them before they get him.
A man believes he has put his mysterious past behind him and has dedicated himself to beginning a new, quiet life. But when he meets a young girl under the control of ultra-violent Russian gangsters, he can't stand idly by - he has to help her.