Underdog

Boris "Kos" Kosinski (Eryk Lubos) is a top MMA fighter. In the biggest battle of his life with his greatest rival, Denim Takaev (Mamed Khalidov), 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

Mariusz Drężek

Puszkin

Aleksandra Popławska

Nina

Eryk Lubos

Borys "Kosa" Kosiński

Mamed Khalidov

Deni Takaev

Emma Giegżno

Sonia

Aleksandra Popławska

Nina

Janusz Chabior

Trener "Kosy"

Tomasz Włosok

Tomek

Tomasz Włosok

Tomek

Jarosław Boberek

Dziedzic

Jarosław Boberek

Dziedzic

Krzysztof Kiersznowski

Cieślak

Bartosz Obuchowicz

Mądrala

Piotr Miazga

Sławomir Mandes