Professor Beaumont is angry that the patients have been complaining about the three doctors, even Griffin, whose lengthy descriptions of operations have induced nausea and all must behave themselves. Unfortunately Griffin gets into a spat with a cantankerous old man, Dick is caught on the fiddle and Duncan gets a thump from a seven foot muscle man whose car he damaged earlier in the day. Duncan is relieved when the day is over - until he drives into Beaumont's car.

Dick and Duncan urge Professor Beaumont to have a day off, but Dick leaves Duncan in the lurch when he joins a friend on his boat, The Sydney Surprise. Duncan goes to find him but Griffin rings Professor Beaumont and sends him to the boat on a supposed emergency. The two doctors are found out - but so is the professor when a rich widow also on board turns out to be his bit on the side.