COLOMBIA. Calli. 1998. The sprawling refugee settlement Agua Blanca is infamous for its internecine gang warfare, drugs and gratuitous violence. Weekends bring the most suffering. Time, booze and drugs ignite bravado or recall supposed slights. Gangs roam their turfs and the staff the small local hospital waits for victims. A medical emergency aid delivers the body of a drug overdosed teenage girl to the emergency room.