Jim Kelly, co-star of 1973's Enter the Dragon, graduates to title-character status with Black Belt Jones. Kelly plays a karate expert who comes to the rescue of his mentor, played by Scatman Crothers, and Scatman's pretty daughter (Gloria Hendry). The Mob-connected villains want to tear down Crothers' martial arts studio to expedite their own graft-ridden real estate endeavors.