Danny, Rex and Major Dennis perform at Gold City's annual charity fair. Rex rides a bull, then spots four men. "Funny - they're all smoking pipes!" They eject tear gas from their pipe stems and rob the charity money! Rex turns away stampeding bulls with the tear gas, then follows the men to town and drops a "Gold Nugget Hotel" sign on top of them!; While visiting an uncle's lighthouse, a storm knocks out the power cable and generator. Danny's Uncle Erik have Rex swim to a passing ship to warn it of danger. Swimming and "surfing" aboard, Rex delivers the message - and knocks down smugglers who hijacked the ship to force it into port.; Bobo's latest craze is weightlifting, because detectives need to be tough. Meanwhile thugs plan to kidnap Miss Moka, a chimp movie star. The Sheriff stops by the movie set, and Bobo falls in love. The kidnappers grab Miss Moka, and Bobo follows the getaway trailer - because a taillight is out. Trying brute force, he gets smacked around, so uses brains instead of brawn by splashing salt water in a thug's eyes. Bobo gets a bit part in the movie - and chucks his weights out the window.