The curmudgeonly GP struggles to come to terms with his new role as a father, having planned to resume his career as a consultant in London before the arrival of his and Louisa's as-yet unnamed son. To make matters worse, he begins to have serious doubts about the competency of his replacement Dr Di Dibbs when she misdiagnoses a patient as well as herself. Martin is then dealt a devastating personal blow after hearing his aunt Joan has died. (This Episode Is Rated TV-PG-V)

The GP returns to his former post at the surgery after the departure of Dr Dibbs, agreeing to stay until a replacement is found. He persuades a reluctant Louisa to move into his house so he can help raise their son, and suggests they could all move to London together in the future. Martin then delivers the eulogy at his aunt Joan's funeral and speaks to her sister Ruth, who proves to be just as cantankerous as he is.

New receptionist Morwenna Newcross gets off to a bad start after arriving late on her first day, and her hyperactive behaviour leads Martin to believe she is high on drugs. Ruth tries to deal with an intruder on the farm who has stolen the hub caps from her car, and the sleepless nights begin to take their toll on Martin and Louisa, who are running out of ways to comfort their constantly wailing baby.

Louisa's hippie mother Eleanor arrives in the village, immediately taking over Martin's kitchen to prepare a herbal tonic, which she later gives to the baby to stop his crying. A culinary rivalry develops between Bert and Mark Bridge, the landlord of the Crab and Lobster pub, at Portwenn Fun Day with both keen to take advantage of the event by providing food for the spectators.

PC Penhale is shocked by the unexpected arrival of his ex-wife Maggie, who appears to have forgotten that they separated years ago and wants to know why he left her. Eleanor goes on a date with local fisherman Paul Hale, an old friend she has not seen since school, while Martin and Louisa finally agree on a name for their baby

Maggie gets the all-clear from the doctor and decides she will return to Bude, forcing PC Penhale to take desperate measures to persuade her to stay in Portwenn. Ruth uncovers a raft of family heirlooms while clearing out a barn at the farm, and the mounting tension between Martin and Louisa peaks when she discovers he has booked a date for James Henry's christening without consulting her.

Bert Large's restaurant business is financial trouble. He can't even afford the food and drink for a charity event to raise money for Florence Dingle's cat sanctuary. Mrs Dingle is distraught. She desperately needs the money to continue to look after the cats and kittens in her care. Bert is also being chased by loan sharks Alastair Tonken and his son Norman for the repayment of £1,000 they gave him to clear his debts, warning of repercussions if he doesn't pay up.

Mrs Tishell decides she can no longer hide her love for Martin and, fuelled by a cocktail of drugs, takes drastic action. While James Henry is in her care, she boards a bus out of Portwenn and leaves a message for Dr Ellingham to `meet them at the castle', forcing Martin, Louisa, Ruth and PC Penhale to mount a desperate search for the pair.

Martin and Louisa are about to get married but will it ever happen. Martin is feeling irritated by PC Penhale, who wrongly believes that he is going to be the best man and Louisa is also late for the service. The vicar has serious doubts as to whether she will turn up, leaving Martin on edge. After she finally arrives the couple are married. Things after the wedding don't go as Martin hoped and Ruth has a difficult time looking after James.

The GP is left holding the baby after upsetting the new childminder, but luckily Mike agrees to look after James at short notice. However, Louisa is not happy with the arrangement and an argument erupts between the newlyweds just as their guests arrive for dinner - and that's only the first of the evening's problems.

A stranger stops dead in his tracks when he sees Ruth in the village, and later he spies on her when she is having a coffee with Caroline. Ruth is not sure why, but she starts feeling uneasy. One of Louisa's pupils blames an upset stomach on a meal she ate at Bert's restaurant and writes about it in the school magazine. Bert and Al are furious, and they go to see Louisa wanting something to be done.

When Martin is talked into taking baby James to playgroup, he is forced to sing along with the other mums. As the parents pair up, one of them says she is worried about her daughter, to which Martin replies that the girl is probably just backward. Al helps Ruth move into a cottage in the village where she meets her new neighbour, a grumpy old man called Moysey. When Moysey goes for a repeat prescription for his asthma, Martin notices that his breathing has got worse - but he takes exception to being poked and prodded. Al admits he would like a girlfriend and asks Morwenna if she has any single friends. Morwenna asks her mate Janice, who is not impressed by the idea. So a desperate Al decides to sign up with Cornish Couples, a dating website.

Mrs Tishell returns to the village. Martin has to work out what is wrong with beach comber Lorna. Al and Morwenna have an internet dating disaster, and romance is blossoming for Bert and Jennifer.

Penhale spreads pandemonium throughout the village and Bert pops the question to Jennifer.

During an examination, Mrs Tishell is smitten by Martin holding her hands and staring into her eyes, and falls head-over-heels in love with him again. Two military policemen call at the police station looking for Mike Pruddy. Al pretends not to know Mike, then goes to warn him the army are looking for him. Louisa has shocking news for Martin.

Louisa is leaving for Spain, Bert and Jennifer's engagement party goes off with a bang, and Al is hailed as a hero for saving Caroline's life.