Serina Hirakawa (Riisa Naka) is a deputy director at a public prosecutor's office. Her father (Yukijiro Hotaru) was a police officer, but killed. Kentaro was charged for murdering her father. Serina's father was investigating Kentaro and his involvement in a string of thefts inside of cars. Kentaro was found guilty for the murder. Serina Hirakawa admired Prosecutor Ryoji Tajima (Goro Kishitani) who extracted a confession from Kentaro.
Now, Serina works for Prosecutor Ryoji. One day, Kentaro insists he is innocent of the murder charge and kills himself in prison.
Several days later, Prosecutor Ryoji meets Attorney Kuromiya (Jiro Sato). The attorney defended Kentaro in the murder case. Attorney Kuromiya tells Prosecutor Ryoji about the real killer in the murder case. Soon, Attorney Kuromiya is found dead. Doubts about the death of Serina's father is aroused. Prosecutor Ryoji is suspected in the murder of Attorney Kuromiya. Serina is dumbfounded by the recent chain of events. She soon begins to investigate the two murder cases: her father's murder and the death of Attorney Kuromiya.
検察庁の事務官・平川星利菜（仲里依紗）の父親（螢雪次朗）は警官で操作絡みで殺害されていた。車上荒らしの疑いで事情聴取された健太郎による犯行とされ逮捕、量刑も確定。星利菜は、健太郎を自白に追い込んだ検事・田島亮二（岸谷五朗）を尊敬し、ともに仕事をするように。しかし、ある日、健太郎が冤罪を主張し、刑務所で自殺したことを知る。数日後、健太郎の弁護を行なった黒宮弁護士（佐藤二朗）と顔を合わせた田島は、真犯人の存在をほのめかされる。
