Lily is a divorced mother of two - Martin and Alexandra. One cold winter evening Martin picks up Alexandra from kindergarten. In the dark streets of their neighborhood, they become part of a tragic incident that is hard to forget or erase.
The film tells us the story of the excellent student Chris, who decides to purge the world. Together with his Winchester, Chris gives God what He wanted. 'Cain' changes completely our notions about everything that surrounds us. How well do we know the people we are communicating with every day?
