Gillis tells the Rileys that Junior is in town playing a slot machine. Riley and Gillis go and alternate suggestions of how to set Junior straight. Riley decides to spend the rest of Junior's money in the machine to teach him a lesson, but instantly wins the $10 jackpot. Riley decides to put that money on the longest of long shots, a horse named Fried Squab, at the races. When the horse was stung by a swarm of bees he shot down the stretch, winning the Rileys $200. Riley is now convinced he has the lucky touch and talks a little old lady, Mrs. Whitaker (Mabel Paige), out of her life savings of $90 to bet on a fight. They intently listen for the outcome by the announcer (an uncredited Frank Nelson, "The Jack Benny Show", "I Love Lucy"). Will Riley's luck continue and how will Junior be affected?
There's a nice moral to the story, and Digger O'Dell at long last reappears to have a couple funny lines.
An aside, Mabel Paige is one of the earliest born (1880) performers to be a television character actor. Many will remember her as the dress shop owner who sells the business to Lucy and Ethel in "The Girls Go Into Business". She died less than four months after it aired. A little imdb research shows the earliest born television actress is likely Una O'Connor and the earliest born actor likely to be Finlay Currie, born 1878. If you're wondering, Burt Mustin was born in 1884.