After the African-American youth who died in the elevator of the Royal Hotel in Tokyo was found, the police launched an investigation and knew his name was Giovanni from the remains of the deceased, and inferred that his purpose in the future was to find his biological mother. According to various clues, the police came to a hot spring and found that the insider had been killed, but they still knew that Yasuki Yasuki, a well-known clothing designer, had cohabited with an African-American soldier in the United States. he sent a police officer to the United States to seek confirmation from the New York police officer Shauftan (George Kennedy). In the process of verification, Dongju fell into historical memory and national complex, and wanted to confuse the Americans, especially Shauftan, with the executioner who committed crimes in Japan, but finally came to his senses and completed the task. Yasuko Kyoko is only a victim of history.