It’s spring in 1938, and a trip back home to Glasgow presents James Herriot with a dilemma that will mean choosing between the people he loves when he is offered a position at his old mentor's forward-thinking practice.

With Tristan's encouragement, James asks Helen if she'd like to go to the local spring dance. But village resident Gerald's arrival with his injured dog, Rock, puts a spanner in the works. Meanwhile, Tristan worries that Siegfried is in danger of losing his edge.