PLOT! Fresh out of prison, highly skilled martial artist and ex-marine Isaiah Bone (Michael Jai White) moves to Los Angeles, where underground fights are being held. One night, after watching a match involving local champion Hammerman, Bone makes a deal with promoter Pinball to get him into the fight scene for 20% of his earnings; 40% if Pinball puts his own money on the line. On that same night, Bone encounters mob boss James and his girlfriend Angela Soto. Bone enters his first underground fight and quickly defeats his opponent with only two kicks. Pinball explains to Bone that Angela was previously married, but James set up her husband Danny on a triple-homicide, sending him to jail. When James learned that she was pregnant, he had her undergo an abortion. Since then, Angela has fallen into drug addiction.
Over the next few nights, Bone makes a name for himself in the underground fighting scene, defeating every fighter in his path and earning himself and Pinball thousands in cash. At the same time, he bonds with the people who live at his apartment building:
Tamara – the landlady who manages his apartment, Roberto – an elderly Latin-American man whom he plays chess with, and Jared – a young boy Tamara adopted after his father was sent to prison. Then, after making the once-undefeated Hammerman fall to the ground, Bone is offered a deal by James. The international underground fighting scene is run by a league of rich, powerful men known as the “Consortium”, but mainly by a black market arms dealer named Franklin McVeigh, and James wants Bone to square off against Pretty Boy Price, the reigning champion. After telling James he will consider the offer, Bone reveals to Angela that he was cell mates and close friends with Danny. Then one day, Danny was murdered by an inmate named JC. Angela reveals that shortly after Danny went to prison, she gave birth to a son, but lost custody of him and does not know if he is still alive. Bone promises to bring her to her son, but sends her to a drug rehab clinic until she is ready.
