Lee Van Cleef stars as John Peter McAllister, who as a reverend master of the Ninja warrior society, deserts the order the order to search for his missing daughter in the U.S.
While in Vietnam, a GI promises his dying buddy that he'll take care of his motorcycle, "Baby", when he gets back home. After his discharge, he meets up with his dead friend's girlfriend, gets the bike, and then runs into trouble from some other bikers who don't like the idea of his having the motorcycle or the girl.
