1938. Eighteen-year-old Sidney Chambers is dancing with Amanda Kendall at her brother’s birthday party at the Caledonian Club. No one can believe that there could ever be another war. Returning to London seven years later, Sidney has gained a Military Cross, and lost his best friend. The carefree youth that he and his friends were promised has been blown apart – and Sidney, carrying a terrible, secret guilt, must decide what to do with the rest of his life. But he has heard a call: constant, though quiet, and growing ever more persistent. To the incredulity of his family and the derision of his friends, Sidney must now negotiate his path to God: the course of which never runs smooth.