Siegfried once again gets James to play cricket in a charity match for the village against the county team. The tables are turned however when James is injured and Siegfried is pressed into service. Bob and Rachel Taylor are worried about their lame horse, Maggie. Siegfried operated on the animal, but she seems to going down hill. Siegfried is accompanied oh his rounds by young Colin Appleby, who has sick goldfish.

An old friend of James and Siegfried, an itinerant raveler called Roddy Travers, arrives in Darrowby. He appears to be stealing instruments from the practice but Siegfried and James are relieved to discover that Roddy's recently acquired lurcher dog, Murphy, is the culprit. However, the situation turns serious when an elderly local farmer accuses Murphy of sheep killing.

Siegfried insists on singing the praises of his new time- management system, a personal diary, much to the annoyance of James. James is particularly put out by Siegfried's successful demonstration to his bete-noir, the redoubtable Mr. Ripley. However, Siegfried's morning is spoiled when he has to deal with Humphrey, an exuberant Great Dane.

Siegfried is perplexed when the usually-caring Grandma Clarke snubs her neighbor, Franco Pedretti, who is the new shepherd on the estate where she is a tenant farmer. It soon becomes apparent that she blames Franco for the untimely death of her son in Italy during the war and the subsequent death of his wife in childbirth.

Tragedy strikes Bill Shadwell when his herd of dairy shorthorns contracts Johne's disease. As Shadwell approaches retirement, his son is keen to move into more profitable Friesian dairy cattle -- a move which means both James and Siegfried are caught up in the family's battle of wills. Mr. Grimsdale's bull poses problems of a different kind when Siegfried is convinced it has swallowed a dangerous metal object. But tightfisted Grimsdale is not convinced that an operation is needed. Tristan's new metal detector could prove to be the solution to a tricky dilemma.

It's raining cats - literally - when Tristan has to face the terrors of an enormous sow, Our Gracie, and her litter of piglets, who are due to be castrated. When the farm cats take a fancy to the anesthetic-stuffed offcuts, they start to doze off in some very unlikely places. Mrs. Clarke, a very determined old lady, is struggling to keep her farm running until she can hand it over to her young granddaughter, Mary. But she is reaching the stage when she can no longer handle the pressures, even with her elder granddaughter, Katherine to help -- and Katherine is planning to pursue a nursing career in Africa...