Based on the same-titled novel, the drama is set in the year 1964, the year the Olympics were held in Tokyo. A nation trying to rebuild its economy post world war II, Japan was eager to show the world what it had to offer. Amidst all the excitement and enthusiasm, two fires had broken out consecutively; at the private residence of the Chief of Police, Suga Shuichiro, and then at the Nakano Police Academy. However, both incidents were hushed up, and even Detective Ochiai Masao, from Division One MPD (Metropolitan Police Department) had to find out about it from his fellow colleague. Ochiai was puzzled as to why no investigations were being carried out and it soon came to light that prior to the first fire at the Chief's home, a threatening letter had been sent to the MPD.