Ricky is working in Monte Carlo, but Fred goofs and negotiates too little money for the engagement. Lucy and Ethel go to the casino to watch, and Lucy finds a chip that someone dropped. She picks it up and puts it on the table. The chip wins, and continues to do so, all by accident. Since Ricky warned Lucy to stay away from the casino, she hides the money in Ethel's trunk. Ricky finds it and thinks Fred has been holding out on him.
