London. Fanny Pye has been a widow for 18 months. Her husband had been a diplomat. Her son Harry is married to Poppy. They have 3 children. Fanny is injured trying to stop street crime. Her daughter Isabel (4 years younger than Harry, married to Max with 3 children) visits her in hospital, as does Fanny's sister Delia, a Baroness with a daughter Rebecca (the youngest, shyest) and 2 other daughters.
The man injured during the street crime might die. Fanny's discharged back to her 5 floor house. The garden is on the canal where narrow boats have moored illegally for decades. Ivy (who used to babysit for her and has been a friend and paid-helper) visits. Her husband is disabled. Delia's daughter Rebecca (26) moves in as housekeeper. Fanny doesn't like being suddenly treated like an old, helpless woman. When with Harry watching a young couple she clumps him with her generation rather than theirs. She wants to sell up and buy Ivy a house without telling her. Fanny's kids don't object.
The crime victim dies. The police try to get her to recall the incident - now a murder case. The next door neighbour's house catches fire, damaging the top floors of Fanny's house (including the attic of souvenirs), thus delaying the already agreed sale. Fanny thinks that Isabel is having an affair (actually she's pregnant). Fanny used to have affairs, we now learn.
Ivy's husband has a stroke, then dies. She's planning to move in with her son's family (Fanny is shocked to discover that the house is twice the size of her own), thus spoiling Fanny's plan of getting her a house. She tells Fanny she should downsize. Fanny wonders about giving the house to Rebecca. Fanny meets Jake, a boat owner. She thinks he may have been involved with the crime.
Fanny meets Tom who she and Pippa knew 40 years before, a widower now. "It had been a pleasant meeting but now the first flush of surprised recognition was over they would become strangers with nothing to say to each other". But they start seeing each other. He sometimes stays in her spare room - he has troubled siblings. He proposes. She rejects, saying that he could be her tenant. Harry's suspicious until he meets Tom. At the end, Fanny's leaving to visit a friend in Pakistan. She's aware of her bouts of inexplicable anger, panic, etc.
Each crisis - Fanny's hospitalisation, the fire - triggers re-evaluations between family members. Fanny re-evaluates her past, her marriage. Conversations come under analysis - "'You usually call me Ma when you are displeased with me'"; "It was simply a coded way of expressing a mild reproach". I couldn't see that Felix's family were worth mentioning.