In this special episode, Julian Norton leaves Herriot Country for the Scottish Highlands, visiting the practice where he began his veterinary career in Thurso. It's not long before he is reminded just how tough a place it is to be a vet, because he's not just there for a catchup with his old mentor - he has to get his hands dirty and assist with a cow who has prolapsed, as well as an extremely challenging lambing. Back in Thirsk, Jean Green is worried about one of her cats who is passing blood.