As a young boy, Frank Stapleton stumbles upon an unanswerable question about life and its meaning, and is devastated at the outcome. Now, half a century later and in retirement after a successful professional career, Frank has to face his doubts again through the problems of his family, colleagues and friends; in particular his son Stuart and Stuarts wife Francesca. It takes an unexpected potential tragedy to bring the story to its climactic resolution, and to an answer to the question posed to Frank all those years before.