Yusaku is based in Kobe, Japan in 1940 where he oversees a trading company, and is married to Satoko. Whilst traveling to Manchuria for business, Yusaku uncovers a stunning national secret. Driven by a sense of justice, he decides to reveal his findings to the world, only to be accused of treachery. This puts his livelihood and reputation in peril. Satoko stands by her husband and vows to back him no matter the consequences, firmly believing his claims.