Martin's medical career remains under scrutiny, as a GMC representative has come to assess him and his surgery. Meanwhile, Al accidentally proposes to Morwenna, and Mrs Tishell has a new lease on life.
Martin's GMC report requires he passes three refresher courses which will then decide whether he is deemed fit to practice, starting with phlebotomy. Meanwhile, Louisa focuses on her new career as a child and adolescent counsellor. Much to Bert's dismay, Al hires Caitlin, and confesses to his accidental proposal.
Ruth is concerned about becoming increasingly forgetful, and is even more perturbed when Martin offers to perform a mini mental state examination. It confirms she is showing early signs of dementia. Meanwhile, Louisa plans a special evening to celebrate Martin's birthday, and Al decides to throw Morwenna a surprise engagement party on the same night. There are also problems when Louisa's class tutorial ends in disaster.
Martin has his second GMC assessment - mock surgery - and Buddy is missing. Meanwhile, Ken's arrival does not bring good news for Al and Bert, and Penhale unhappy with the arrival of his predecessor, Mark Mylow, who tries to take charge of his investigation.
Martin investigates after local farmer Dennis Thorpe shoots at Robert for taking some of his eggs. Meanwhile, Emily returns to the surgery to see Martin after her acne medication caused a bad reaction, a secret bidder buys the Crab and Lobster pub, and Louisa ponders if she should see a fertility specialist.
Martin and Louisa have their first fertility consultation with Dr Emma Ryder. Meanwhile, a case of vandalism at a local surf school is reported and PC Joe Penhale investigates. Elsewhere, Dr Edward Mullen returns to the surgery, and Bert is feeling the pressure from Caitlin. Starring Martin Clunes, Lucy Russell and Conleth Hill.
Martin has to rush Buddy the dog to the vets. Meanwhile, Mrs Tishell's young cousin Sarah joins her for some work experience, but it does not go to plan, and one of Louisa's clients arrives at the surgery unannounced, posing a dilemma.
Martin rushes to Ruth's for a medical emergency, and preparations for Morwenna and Al's wedding do not go to plan. Elsewhere, Martin takes his final GMC assessment under the watchful eye of eminent surgeon Bernard Newton, who monitors Martin's skills in assisted surgery.