Siegfried visits a farm to treat a sick cat and pulls off a brilliant piece of human diagnosis at the same time. He also gets an unexpected visit from the puritan Mr. Hopps -- who does not have an animal with him.

Siegfried is laid up at Skeldale with his foot in plaster. His dreams of mouthwatering meals prepared by Mrs. Alton are soon shattered by her regime of a strict diet "for an invalid". Tristan falls for the dark, sad-eyed beauty, Angela Mortimer, Mrs. Pumphrey's great-niece, who has been jilted by her fiance. Fortunately, the demanding dog Tricky-Woo provides an ideal excuse for Tristan to make a number of house calls. James impresses three hero-worshiping locals with his cow-curing abilities, and he learns to value their support when he has to judge the Darrowby Vegetable Show, with disastrous results.