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.

Jake, full of anger after his father's death, is just starting to find a place for himself at his new Orlando high school - until Ryan, head of an underground MMA fight club, picks Jake out as a prime opponent. After being trounced by Ryan in front of the entire school, Jake begins training under the firm, moral guidance of a MMA master, where he learns how to fight... and how to avoid a fight. But it becomes obvious that a rematch will be inevitable if Jake wants to stop Ryan and his bullying, once and for all.