Julian and Peter must both operate on dogs with tumours. Other patients include hens with an eye infection, a cat having a caesarean, and three surprisingly speedy tortoises.
Peter faces a struggle to save a baby alpaca that was born prematurely during a storm, and Julian performs a delicate eye operation on a labrador preparing for a dog show.
Julian comes to the rescue of a cow who is struggling to calf. Peter operates on boxer dog Boot to remove an ominous looking lump. He also has to carry out a job he would rather not be doing at Sherene's stables.
Jean is seriously ill and her favorite sheep's life is in balance, a springer spaniel with a number of lumps needs some attention and Julian feels pressure in surgery.
Peter returns to his childhood home for the first time in 50 years and visits some of his former teachers from primary school to sixth form. He looks back on his experiences as a work experience student for Alf Wight aka James Herriot.
The series concludes with an episode focusing on births and new beginnings. While delivering a calf, Julian also helps a new graduate to begin her veterinary career.