King of the Kickboxers II: Fighting Spirit

Billy, a young fighter, sees his sister Judith blinded after a near assault. Crime boss Russell forces Billy into illegal street fights to pay for Judith's surgery. When Billy quits, Russell kills him. Afterward, Billy's best friend David vows revenge but must train in martial arts first. Guided by Billy's ghost, and his mentor Murphy, David prepares to confront Russell. AKA Fighting Spirit.