Postwar Secrets(戦後秘話　宝石略奪)

A young man Yamada, who just returned to Tokyo shortly after the war, walked around the city searching for his only sister, Kinko. At last she was spotted as a prostitute and was in a state of dying due to syphilis. Yamada, who hated the job of prostitutes, will not let her sister dance, and it is determined that the only way to save the prostitutes is to get a large sum of money. Around that time, Okamura, the leader of the political world, asked Yamada to deliver to Singapore in order to use the diamond called "Great Mongolia", which is 50 billion yen, as an ideal form of Asia. Military, politicians and secret puppeteers enter a fierce battle for "Great Mongolia".