Boris 'Kos' Kosinski is a top MMA fighter. In the biggest battle of his life with his greatest rival, Denim Takaev, he makes a mistake that destroys his entire career. He loses everything. This failure brings him through a series of ups and downs, but it also pushes him to undertake a titanic effort to fight and win back respect and love.
The protagonist of the film is a young boy named Kuba who, due to his seriously ill sister, decides to get a quick cash by taking part in illegal car races. On his way he meets not only many difficulties but a girl Ewa, with whom he will be joined not only by love for racing.