Johnny Mack Brown goes in search of a treasure map tattooed on the chest of a man who once betrayed his father. Johnny Mack Brown goes in search of a treasure map tattooed on the chest of a man who once betrayed his father. Johnny Mack Brown goes in search of a treasure map tattooed on the chest of a man who once betrayed his father. Johnny Mack Brown goes in search of a treasure map tattooed on the chest of a man who once betrayed his father.