In 1959, a body of a flight attendant of an international airline is found, strangled. Detective Rokuro Fujisawa takes charge of the investigation with a young detective Ichimura and his investigations lead him to Father Tolbeck as a suspect. But the police are forced to move very discreetly as the time was right after the Second World War, when a sensitive situation that involves Western people and religion is likely to become an international issue. The investigation leads to an unexpected discloser of a shadowy business behind the church that reflects the uncertainty of the time.

Urushibara Kazuki heads to Kyoto to explore the secret of his wife, Saeko, who is hospitalized for terminal cancer.