ONE on Prime Video 4: Abbasov vs. Lee

Picking up after the events of Never Back Down 2, former MMA champion Case Walker is on the comeback trail to become champion once again.

Four fighters from different backgrounds come together to train under an ex MMA rising star and then ultimately have to fight each other and the traitor in their midst.

When shady businessman Ron Hall kidnaps his daughter, retired karate champion Michael Rivers is forced to enter a deadly illegal Kumite tournament in Bulgaria. Enlisting the help of seasoned trainers Master Loren and Julie Jackson, he discovers other fighters face the same desperate struggle to save their loved ones.

After Margaret, a divorcée living in Dublin, loses her teenage son, she develops an unorthodox relationship with Joe, a homeless youth. Their tentative trust is threatened by his involvement with a violent gang and the escalation of her ex-husband's grieving rage.

Raised as a slave, Danny is used to fighting for his survival. In fact, his "master," Bart, thinks of him as a pet and goes as far as leashing him with a collar so they can make money in fight clubs, where Danny is the main contender. When Bart's crew is in a car accident, Danny escapes and meets a blind, kindhearted piano tuner who takes him in and uses music to free the fighter's long-buried heart.