"It will always be dark before light. But we must focus on the light, or it may never come."
As Robert Rainey disappears into the darkness of the Third Reich, his children, Jeremy and Jillian fear he has become a Nazi. Following their father's words, they both embark on paths to find the light. Jeremy becomes a high-level spy, keeping tabs on the Nazi nuclear program. Jillian takes up nursing in the army and is posted to the Philippines on the eve of the Japanese invasion. As the war grinds on, their lives become ever more precarious. Jeremy discovers the truth behind Nazi nuclear experiments with the Gestapo hot on his tail. Jillian, in a bid to remain free, follows a hereditary sword exactly like her father's into the heart of Japan. Through the many shades of good and evil, the siblings persevere with the help of old friends and ties to the 650-year-old origins of the hereditary sword of the Raineys.