Masayuki Meguro

The body of Kou Fujisaki, who fell to her death, is discovered in front of an old building in West Shinjuku. Chief Sakamoto notifies Ushio, who arrives at the scene. Ushio thinks that this must be a murder, but according to Yamaji, who was at the scene before him, an eyewitness testified that Kou had jumped off the roof of the building, killing herself. Kou is someone who has lingered in Ushio's memory - as a suspect...

Restaurant owner Kenji Nagata has been stabbed to death. When the police begin an investigation, a bag of human bones is discovered in Nagata's car and Detective Kajikawa asks anthropologist Kumiko Misaki to perform an examination. She discovers that the deceased was a man in his mid-twenties and that he died more than 15 years ago. Meanwhile, suspicion for Nagata's murder falls on his apprentice chef Ryohei Miyamura due to the murder weapon being a kitchen knife. Afterwards, Miyamura breaks into Kumiko's lab, but manages to escape...

The body of Kazuyoshi Kawagishi, a construction company worker, is discovered stabbed to death in Shinjuku Central Park in Tokyo. Detective Masanao Ushio of Shinjuku West PD begins an investigation and finds that the murdered Kawagishi was an honest person who didn't have any troubles. Kawagishi worked for a company in Kofu City in Yamanashi, leaving behind his wife and daughter on Awaji Island in Hyogo. He seems to have started working as a laborer 3 years ago, having fallen on hard times when the company went bankrupt. Saeko Kawamura, Ushio's reporter friend, calls him wanting to talk about the case. According to Saeko, Kawagishi was one of the survivors of the "bus hijack arson case" that happened three years ago. In the bus hijack arson case, a man who was hallucinating under the influence of dangerous drugs set fire to an intercity bus going to Shinjuku and departing from Kofu Station...

Masanao Ushio and other detectives from Shinjuku West PD discover the strangled dead body of a woman in an empty building in West Shinjuku in Tokyo. According to her husband Takeshi, the murdered Chieko Akiba was a top salesperson at the insurance company where she worked, but quit her job three months ago and planned to open a beauty salon after buying the building which happens to be the crime scene. The call history on her mobile phone reveals the victim answered a call at 8:16 PM and is presumed to have been murdered immediately afterwards. However, Ushio is surprised to hear who was on the other side of the call: Kyoko Yamano, a woman who accompanied Ushio under an umbrella on a rainy night one year ago and whose husband was killed by someone that very night...

Tatsumura Yusuke, Toho Advertising's deputy sales manager was a childhood friend of Akiko and Katsuya. In fact, there is a secret that cannot be divulged about the relationship between Akiko and her father and the truth behind his death between these three people. They don't contact each other after they grow up but 25 years later, that secret comes back to Akiko in an extortion letter. Meanwhile, Tatsumura's division suddenly competes in a big project with a budget of 1.8 billion yen. Tatsumura works towards a successful pitch with Tachibana, Hirano, and Totsuka but interference within the company from envious parties and a heated contest with a rival firm remains. Then Tatsumura learns that there is a link between this project and that secret from his past...