Cat was only 9 when her parents were brutally murdered in front of her eyes. The girl managed to escape from the criminals and find shelter in Chicago by her uncle. Now Cat is a professional killer. She must unravel the old crime and avenge the death of her parents. All tracks lead to a Columbian drug lord Don Lucia. The only thread that connects woman-killer with the world of ordinary people is her boyfriend who does not know what his girlfriend deals with.