Stream How to Become a Hero Online Free – Watch Full Movie from Home at 123Movies. . Mladen Maticevic is a 40 year old Serbian film director. In the summer of 2005, he decided to try and run the full marathon race on the next Belgrade Marathon, in the spring of 2006. This film depicts his struggle to train, lose weight, learn the tactics and eventually win the race. His family doubts that such feat is possible while friends both encourage him and discourage him to pull it off. Suddenly the whole marathon run becomes a metaphor for everyday struggles in post-Communist Belgrade.