PC Mark Mylow can't persuade Dr Ellingham to be his best man, but Al Large agrees. The stag weekend – a camping trip – goes wrong when an adder bites Mark’s ankle and he suffers a potentially fatal allergic reaction. Meanwhile, Dr Ellingham deals with a spate of weever fish stings among teenage boys playing a dangerous game of dare.

Mrs Wilson, the hypochondriac owner of the Wilson hotel, forces her attentions on a very indifferent Martin, which makes Louisa jealous anyway. Joan dates a much younger man than her, much to Martin's surprise.

Martin is called to an emergency at a local farm, but much to his annoyance the sick farmer, Ron Pickford seems well enough to be managing his lambing sheep.

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.

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.

Al welcomes his first fishing guests, but an uninvited one means that a good review is definitely not guaranteed, while Bert decides to try to rejuvenate trade at the restaurant by joining an online voucher scheme. Morwenna asks Martin for a pay rise, and Louisa has to find a new babysitter to look after James Henry and reluctantly decides to offer Janice a trial. Penhale is excited to receive his new police issue Taser, but Portwenn does not exactly offer him plenty of opportunities to try it out.

When a nasty stomach virus hits Portwenn, half the village takes ill, and Doc thinks he has traced the virus's source to the local swimming pool.

After turning down lovely teacher Louisa's invitation to a village dance, the socially awkward Doc treats a park ranger with an unusual problem.

Pauline looks set to achieve her ambition of joining the Portwenn Lifeboat crew. However, her joy is short lived when she is confronted with the chauvinistic behaviour of her shipmates. Martin is accused of murder by the husband of a woman who died in his care.

Martin suspects Louisa may have anaemia. Aunt Joan is forced to receive treatment from Martin after nearly running someone over. The Doc is approached by Alison Lane, who worries about her daughter Delph's behaviour.

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.

After reaching breaking point with being followed around by Buddy, Martin resolves to find a vet to have it put down, while Ruth finds out that Bert has been trying to make his own whisky. Clive is suspicious of Mrs Tishell and who she might be cooking meals for, Penhale makes a hash of asking Janice out, and Louisa and Martin's therapy homework results in a picnic on the beach, where they are interrupted by local vet Angela Sim - who appears to be hallucinating.

Louisa helps out her ex-boyfriend Danny when he brings seven children from London to camp on Ruth's farm - supervised by Al and Bert - while she and Martin plan a date on the advice of Dr Timoney. However, their night at the restaurant is interrupted when Danny calls saying one of the youngsters has gone missing. Things get worse for the couple when Martin uncovers a health scare at James's first birthday party that makes all the guests leave very quickly.

Louisa is shocked and Martin suspicious by the unannounced return of her father. Ruth is helping Martin with his blood phobia when she discovers his predicament, and an unexpected caravan squatter thwarts Bert's dreams of making a quick buck.

After developing a sudden fear of blood, successful surgeon Dr. Martin Ellingham abandons London for a general practice in a quiet Cornish hamlet.

Quirky Doc Martin opens his village practice, only to discover that most of his 'patients' enjoy using his waiting room as a makeshift social club.

An outbreak of what the Doc suspects is Impetigo leads to problems for Louisa, who must decide whether to follow the Doc's orders to force the infected children to stay at home, or to help the parents by allowing the children to attend school. The decision is made harder by her impending interview to take over the job of Head Teacher - in front of a board of governors that (to his surprise) includes Doc Martin. Meanwhile, an accident in the Fish and Chip shop leaves Bert behind the fryers and the owner's son, Peter, in need of somewhere to stay while his mother is in hospital. His first choice is with none other than a certain Doctor Martin Ellingham...

The Doc deals with a strange family who seem reluctant to let him make house calls, and whose passion for taxidermy seems to hint at a dark secret involving their missing mother. PC Mystow also has family problems when his overbearing sister moves in a sets up shop - much to the Doc's disgust - as a herbalist. A chance remark by Pauline sets Al on a path that could well destroy his relationship with Bert.

Anthony and Terri Oakwood move in next door to Louisa with their son, Sam, who is given extreme freedom by his parents to express himself. The new arrivals interrupt a planned dinner between Louisa and Martin, and Martin leaves abruptly.

It's Martin's wedding day and he manages to offend the vicar who is due to conduct the ceremony by suggesting he has a drink problem. When they struggle over a bottle of whisky, the vicar falls over, fracturing his pelvis and Martin has to find a replacement. Pauline suggests the former vicar of Delabole, who strikes a deal. He will conduct the wedding ceremony if Martin will examine his sick pig. Bert and Al are putting the finishing touches to the wedding banquet when disaster strikes. Last in the series.

Dr Martin Ellingham is shocked to find Louisa and Aunt Joan knocking at his door before the Surgery has opened. Louisa has had a medical scare and wants Martin’s reassurance that everything is fine.

Dr Martin Ellingham is called to Louisa’s new home after she has a dizzy spell while shifting furniture. Martin urges her to slow down, but is shocked to learn that Louisa has applied to be her school’s headteacher again.

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

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.

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.