One evening, Princess Sakura is attacked by a man. At that time, the Princess could not see his face. and only sees a tattoo on his body. Because of that that night, Princess Sakura falls in love with the man. In order to find the man she gives up everything and gets the same identical tattoo. The princess then works as a prostitute. Meanwhile Gonsuke is the man who attacked Princess Sakura. He also stole a scroll and, because of that, he is chased by assassins.
Mariko is a forensic scientist working at the Kyoto PD Crime Lab. Her credo is “science never lies” and she delves into the truth of the case with her colleagues with their specialized skills and knowledge in forensic medicine, physics, chemistry etc. Mariko’s steadfast belief in science makes her stand against conventional institutional ethics of the police department, diehard detectives averse to scientific investigation and sometimes even with her own colleagues, but she stays faithful to her belief in science and continues to pursue the truth.
Nobuko is a plain, unattractive woman with disheveled hair, and is hired as a housekeeper in the Inamura residence in Tokyo. The Inamuras are a family of six. The father, Tatsuya, is the head of a university hospital's department of internal medicine. He lives with his wife Haruko, their three sons, and Tatsuya's mother, Shigeko. Although the Inamuras appear to be a happy family, Nobuko soon uncovers the truth.
