They have been tight lipped on the plot thus far but we now know the following:
“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.”
The Undisputed series has fast become one of the most popular western martial arts movie franchises of all time and the character Yuri Boyka, played by Scott Adkins, has become one of the most iconic and engaging characters in modern martial arts cinema. Millennium Films is currently in production of Boyka: Undisputed IV.