Submission Underground 13 (2020)

An amateur fighter is lured by a trafficking syndicate specializing in elite underground fighting where her brutal captor forces her to fight or face certain death.

Russian inmate Boyka, now severely hobbled by the knee injury suffered at the end of Undisputed 2. No longer the feared prison fighter he was, he has declined so far that he is now good only for cleaning toilets. But when a new prison fight tournament begins - an international affair, matching the best fighters from prisons around the globe, enticing them with the promise of freedom for the winner - Boyka must reclaim his dignity and fight for his position in the tournament.

A burned-out paramedic tries to survive his last 24 hours on the job while training a new recruit.

Two scheming demons strike a deal with a punk rock-loving teen so they can leave the Underworld and live out their dreams in the Land of the Living.

A young Asian American martial artist is forced to participate in a brutal formal street-fight competition.

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.

As boxing's popularity wanes, three fighters at different stages of their career make sacrifices to pursue their dreams of becoming champions.

An inside look into one night in the San Francisco underground rave scene.

In Los Angeles, an ex-con takes the underground fighting world by storm in his quest to fulfill a promise to a dead friend.

An underground MMA fighter must confront his sister and his past in an adventure through parallel universes