Fresh out of veterinary college in 1937, James Herriot struggles to find work in his Depression-struck home town of Glasgow. Seeking new opportunities, he pursues a position in the remote village of Darrowby working for eccentric local vet Siegfried Farnon, who is less than impressed by his early efforts. However, a difficult calving gives James a chance to prove his worth.

Skeldale House descends into chaos with the arrival of Siegfried's wayward brother Tristan. Helen provides James with a reason to stay in the Dales.