Atheist theologian and ex-priest, Bernard, takes a leave from his college in the grey, industrial town of Rummidge, UK, to escort his unwilling father, Jack, to Hawaii at the request of his elderly aunt, Ursula, who is dying of cancer. Bernard's domineering sister, Tess, is strongly opposed. To save on costs, they join a charter tour.

On the day of arrival, Jack is hit by a car and confined to hospital. Bernard spends many days traveling between his dad's bedside and Ursula's in an inadequate nursing home. The near-but-far separation between the aged siblings gives Bernard time and opportunity to discover their past.

The exotic, touristic "paradise" on earth and an affair with Yolande, driver of the car that struck his father, awaken Bernard to the sensual pleasures of existence. Ursula, always portrayed as the selfish black sheep, had been sexually abused as a child by her oldest brother Sean--venerated as a hero by the family for his death in the war. A lad at the time, Jack knew of the abuse.

With credible evidence and an impressive lack of self-pity, Ursula explains to Bernard that the experience ruined her marriage and her life. She wants Jack's apology. With the help of his sister and his lover, the newly secular Bernard brings about a reconciliation to the greater peace of all involved, including himself.