Linda and Peter Pratman's son Adam is autistic, but they still love him and hope that he'll at least start talking some day. However he's teased and abused by the kids of the neighborhood and his grandpa . When several people around Adam die an unexpected death, his parents start to suspect Adam - is he just simulating to be so ignorant about his environment?

The stage is set for a series of confrontations when photographer Mark Jefferson (Tom Eplin) agrees to help his friend Roger (John Mayall) defend his night club against a handful of organized crime figures. Mark has an added incentive for becoming involved as his ex-girlfriend Carol (Cheri Cameron Newell) sings at the club. But the gangsters are willing to use mayhem and murder in order to take over Roger's business. It appears that the petty mobsters are out to sell illegal weapons to anyone who wants them, especially L.A.'s youth, instead of using the club as a front for a prostitution ring as Roger suspects. Soon Mark and his trusty motorcycle have their work cut out for them.