As hats go out of fashion, the anthropomorphic bear Popol the Hatter heads into the American West with his wife Virginia and blue donkey, Bluebell.
They are captured by the gangster Bully Bull the anthropomorphised bulldog, and although they escape once, he recaptures them, before Bluebell kicks him so hard that he flies into the air and lands in Santa Barbara, where he is found and imprisoned by a sheriff.