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.
Make an appointment with the brilliant but socially awkward and neurotic Doc Martin. When Martin develops an aversion to blood, he abandons his career as a celebrated London surgeon and becomes the only doctor in a sleepy small town where his tactless manner soon has the whole town in an uproar.