TB testing mistakenly puts a prize cow in danger. Helen struggles with her lifelong vocation. Mrs. Hall and Tristan have brushes with love.

James is put to the test with an ailing racehorse. Tristan faces a familiar temptation. Siegfried angles for a prestigious client.

James and Helen enter married life, while James settles in uneasily as Siegfried’s partner at the clinic. Tristan too must make new adjustments.

A missing ring is just one snag as James and Helen’s wedding date approaches. For one thing, a farmer’s cow may have TB.