Tom is a kindly but deluded old duffer who frequently lives in a fantasy world following his retirement as an accountant. A widower for at least a decade, his increasingly eccentric behaviour leads his alcoholic and adulterous daughter-in-law Marion and henpecked son Geoffrey to move him into Bayview where he finds himself living next door to Diana. The two form an unlikely partnership and discover that they are able to wreak havoc amongst the younger staff and management in the home in order to create a more tolerable living environment for themselves and their fellow residents. Tom's optimistic, cheery demeanour and unencumbered Anglican Christianity contrast Diana's dark cynicism and avowed atheism, as both attempt to influence the other's world view.