This drama tells the story of the female detective Hiiragi Hyōyuki (Haru) who has instant memory ability and camera eye.) is the director of the Investigation Division of the Metropolitan Police Department. She is completely ruthless in tracking down prisoners. She is called the “Ice Queen” because she has no blood or tears. She has an ascetic character that is very strict with others and herself.Such a story tells the story of Bing Yue facing a past that he cannot forget, embracing his trauma, and working hard to solve the case with his fellow detectives who have eccentricities.

A murder occurred in an empty house within the jurisdiction of Koganei Police Station.Hiiragi Hyōgetsu (Haru), the leader of the No. 3 Homicide Team of the Search Section 1, takes Toya Kenjiro (Yamamoto Koji), Homura Shogo (Morimoto Shintaro), Kisuke Keisuke (Kura Yuki) and Mizue Ritsu (Kashiwagi Yu) to go immediatelyA preliminary investigation was conducted at the scene.The corpse lay under the tatami that had been unoccupied for many years.

After Bingyue quickly completed the preliminary investigation, she noticed a woman in the distance who had been observing here and walked towards her.Bingyue told Tsuchiya that she had seen this woman at 14:5 on December 13, 7 years ago...

The body was identified as supermarket manager Oyamada Mitsuru (Mizusawa Shingo).He often had disputes with residents because of his poor service attitude.The investigation showed that Oyamada was probably stabbed multiple times in the back to death somewhere and then transported to the empty house.

Hyōtsuki and Tsuchiya began to investigate the woman at the scene - Haruka Aikawa (Mayu Yamaguchi).Seven years ago, the then 16-year-old high school student Saki Asakura (Futaba Mori) disappeared while live broadcasting on the street.Her friend Yao has been collecting witness information on social media in order to find Sa Xi.Bingyue remembered meeting Haruka at that time.

Bingyue has instant memory, like a camera eye, and can remember what she sees like a photo.With this ability, Hiiragi Hyōgetsu's team is known for its high arrest rate.

After returning home, Bingyue found her sister Harina (Kato Nazu) waiting for her.Yangcai prepared the food, but Bingyue had a cold attitude.But as soon as she walked into her room, Bingyue noticed that the wardrobe was closed, and a scene from a past case suddenly flashed in her mind.She became very flustered and pushed Hina violently.She also carries indelible pain in her heart...

The next day, Bingyue and Tsuchiya came to Haruka's home.At first, Yao was reluctant to cooperate, but when she learned that Bingyue remembered what she said on social media 7 years ago, she was very surprised and started to open up and talk.

What is the connection between this empty house murder case and the disappearance case 7 years ago?Also, what is the case that is etched in Bingyue's memory that she can never forget?