In front of Hanagata Rie, who came to study at the University of Madrid, her teacher Julian Ibarraguirre was killed, and the girl was accused of committing this crime. Rie begins her own investigation, during which she unexpectedly meets with her old acquaintance, journalist Ryumon Jiro, who is looking for traces of a certain Guillermo, a Japanese who took part in the Spanish Civil War on the side of Franco in 1936. These searches reveal the mystery of the gold bars stolen by the Russians during the war. But she also becomes known to the killer Ibarraguirre...