The short (273 pp.) novel is the life story of Paul Roberts, who we first meet as a 19-year-old Sussex University undergraduate returning to his parents' house in the leafy southern suburbs of London (Sutton, in Surrey, is suggested as a model.) The time is the early sixties, and there are a few references to current events. Paul joins the tennis club, which is the one of the few opportunities such places offer for socialising. In a random-draw mixed doubles, he is thrown together with Susan MacLeod, a 48-year-old married woman with two daughters older than Paul. Improbably, Paul and Susan become lovers and she eventually leaves her family to set up house with Paul in South London. Having nothing to do but a little housekeeping, Susan soon descends into alcoholism and dementia. Paul departs and embarks on foreign travels, picking up jobs and women at random.
Paul is a quintessentially alienated character. With no interest in either politics or religion, and no particular ambition, he takes life as it comes. As he narrates his life in this book, he freely admits that memory is unreliable and he may not be telling us the truth.