When the expatriate finally solves this mystery and meets the illegitimate daughter of the artist, he becomes caught up in the woman's quest to find her mother, who went missing during a daylight bombing attack on Munich in WWII. Reluctantly, he realizes he was destined to become involved with these characters in his effort to bring them together.

Blue Moon is more than a story about war. It reveals the every day joy and pathos of people: lovers and friends caught in the morass of wartime terror, ordinary people trying to live life, to love and be loved, to stay alive in the worst of circumstances. It proposes what it might have been like to try to survive while the gates of Hell were open and the worst of its aggregation were milling about. In the end it's about a love child's love.