In the fourth installment of the fighting franchise, Boyka is shooting for the big leagues when an accidental death in the ring makes him question everything he stands for. When he finds out the wife of the man he accidentally killed is in trouble, Boyka offers to fight in a series of impossible battles to free her from a life of servitude.
Scott Adkins
Teodora Duhovnikova
Alon Aboutboul
Julian Vergov
Martyn Ford
Brahim Achabbakhe
Paul Chahidi
Petio Petkov
Valentin Ganev
Vlado Mihailov
Vladimir Kolev
Hristo Petkov
Boris Pankin
Bashar Rahal
Emilien De Falco
Tim Man
Andy Long Nguyen
Hristo Padev
Yavor Baharov
Plamen Velikov
Slavi Slavov
Ivan Kostadinov
Atanas Madzharov
Atanaska Popova
Georgi Petkov
Mihaela Semova
Trayan Milenov-Troy
Vencislav Stojanov
Velizar Peev
Tsvetolyub Iliev
Ilian Emanviov
Danko Jordanov
Ivan Iliev
Genko Ivanov
Stefan Shopov
Dimiter Doichinov
Venelin Mishev
Anina Youroukova
Aleksandar Belovski