Dick and Duncan both want to take physiotherapist Pamela Kincaid to a weekend beach party. Duncan plans to get Dick out of the way by sending him to a conference but Dick 'persuades' a philandering patient to take his place. When the man's wife turns up at St. Barnabas to see him, a heavily bandaged Duncan impersonates him, but his efforts to avoid Professor Beaumont leave Dick free to act as escort to Pamela.

Retired jockey 'Chalky' White is on Duncan's ward. Whilst Sister Cummings misunderstands their conversation about horses, 'Chalky' persuades Duncan to invest in a race horse, Moonboggler, and Dick goes half shares with him. When the horse goes lame the doctors plan to put him for stud but unfortunately too much sex makes him go dizzy.

Dick's latest money-making scheme is a raffle with a trip to Hawaii as the main prize. Griffin wins it but goes down with a 'mysterious' illness and can't make it so Beaumont, who has bought most of the tickets, demands there is a second draw. The winner is Duncan but the trip is cancelled because the travel agent with whom Dick arranged it has been arrested for fraud.