 Uncle Tex invites both families to fly to his ranch deep in the heart of Texarock. However he asks his nephew Fred a big but dangerous favor: to be in the lookout of outlaw rustler Billy the Kidder and his gang, who steals cattle out of the ranch. In order to catch the gang, Fred and Barney must disguise as a longhorn steer. But a cow named Carmen fell in love with the false steer, and might cost Barney and Fred a lynching party staged by the murderous Billy himself...