Enthusiastic American journalist goes to Brazil as the Carnival starts to investigate mass executions of street kids. She meets a savage crime boss called Boca who seemingly wants to help the children and falls under his brutal charm.
Pulp novelist Eric lives in a bad neighborhood, and the guy upstairs annoys him with his noise. Gradually this escalates to pranksters phone calls and wire tapping which ticks off Eric's already unstable, nervous and paranoid personality.
Mathilda, a 12-year-old girl, is reluctantly taken in by Léon, a professional assassin, after her family is murdered. Léon and Mathilda form an unusual relationship, as she becomes his protégée and learns the assassin's trade.