Skeldale House is busier than ever while Tristan is away serving. James and Helen dream about the future, hoping that James will not be called up to serve. When Mrs. Hall takes a leap of faith, Siegfried offers his support.

Siegfried has the bright idea of bringing in an experienced bookkeeper, Miss Harbottle, to bring method to their madness. James and Helen take inspiration from Siegfried's 'Carpe Diem' approach and make a long-awaited decision.

Busy and exhausted, James and Helen cannot get any time together. James thinks he found a solution when he hires a new trainee vet, Richard Carmody, but things do not quite work out as he expects.

Carmody is challenged with learning how to be a vet. The new farmers have a worrying illness amongst their herd and James wants to help them. Helen rallies the community to help the newcomers whilst she waits for some personal news.

With the War feeling closer to home, James desperately wants things in order, and Carmody trained to support Siegfried. A dinner with Gerald leaves Mrs. Hall with a dilemma.

When Richard Alderson needs help, Helen returns to Heston Grange; however, buried family secrets threaten to tear their relationship apart. Gerald's beloved dog, Rock, needs veterinary help, but he is too worried about the operation.