Martin is busy with patients on his last day in town. After a car accident, Louisa goes into labor.
Martin and Pauline are surprised by the number of patients coming to see him on the last day before his Surgery closes and he moves to London. Taxi driver Tommy delivers a patient to the Surgery, but complains of migraine headaches himself. Martin checks him for any serious brain conditions, and tells him to make an appointment with the new doctor if the headaches continue. Martin is driving out of Portwenn with the moving men when he sees Tasha fall from the Harbour Day stage. With a little bit of help from a guilty Bert and Al, he is able to diagnose Tasha's medical condition, and is shocked to learn that she is married to taxi driver Tommy, and that he is driving Louisa to her hospital appointment. Louisa's life is in danger. Martin rushes after Louisa, finding her safe at the scene of a road accident caused by Tommy. Martin and Louisa help Tommy to a nearby inn where his medical condition can be treated; but due to her exertions, Louisa goes into premature labor.