The young FBI agent John Buckner is instructed to bring Huey Walker, a hippie from the sixties, to prison. They travel by train, and of course, Huey tries to escape. John loses his freedom and his identity through one of Huey's tricks: He plies him with drink and takes his gun, his handcuffs and his passport. Now John ends up in jail instead of Huey... When the mistake is discovered, John sets off in pursuit of Huey.