Margo takes great pride in her new job at the surgery, but realises where her greatest talent lies. Louisa wonders if she's made a mistake bringing her family to Corfu when Gerry befriends a convict.

As the Durrells prepare for a celebration, Margo is determined to persuade the reclusive Countess Mavrodaki to attend. Sven makes a good impression and Gerry considers releasing his animals into the wild.

Feeling the financial pinch, Louisa tries to raise money at market and attracts the attention of a visiting English gent. Gerry comes up with a plan to breed otters. Leslie accidentally shoots Roger.

Hugh organises a cricket match to bring everyone together. Spiro tells Louisa that she has terrible taste in men. Larry finds that Vasilia wants to advance their relationship faster than expected.

When Lugaretzia's daughter goes into labour Larry is sent to fetch Dr. Petrides, but he has his hands full delivering his own child. Theo and Gerry make a discovery at the den. Margo is delighted two men are fighting over her.

After Larry discovers Aunt Hermione has died in her sleep she is given a bizarre memorial service organized by Margo before Louisa and Larry escort the body back to England. Leslie is shocked to learn that he has impregnated Daphne, one of his former girlfriends, and makes a compromise when her father demands a shotgun wedding though Margo finds herself succumbing to the persistent Zoltan.

Louisa throws a party for Gerry's thirteenth birthday but it is a staid affair and Gerry does not appreciate the children's games, railing at his mother before storming out. Spiros is also unhappy as his wife has left him and Dr Petrides is fed up with the guests demanding he diagnoses their ailments. Larry livens matters up with a conga and, despite a mosquito infestation, the evening ends on a reconciliatory note.

Wanting to avoid his depressingly empty house, Spiros spends most of his time at the Durrells' home. Louisa is not complaining, she just wants him to be happy and the two become closer. In the town, Larry meets Elena, a beautiful, exotic young woman who, along with her friend, the bearded woman, happen to be part of the travelling circus. Elena reveals she is a contortionist and after she performs some of her moves, Larry falls quickly in love. Keen to get involved, Louisa and Spiros help the circus drum up business whilst Margo starts to rehearse a very risky act and Gerry makes sure the animals are being treated well. With the magic of the circus rubbing off on the whole family, will it work its charm on Louisa and Spiros?

With storm clouds gathering, the island realises it can no longer ignore the rumblings of war just as it looks as though the Durrells may have found their happy ending.