Louisa is getting ready to leave for Spain. Bert struggles with some party plans. Al becomes a hero after saving Caroline's life. Martin attempts to book a flight to Spain to get Louisa back and as he looks through his mail he see the scan of Louisa's brain and spots a malformation. Martin calls Louisa to tell her not to get on the plane, but she beieves that he is just trying to stop her leaving and hangs up on him. Martin faces a race to get to the airport to stop her as the pressure in an airplane could trigger it to bleed.
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.