Masayoshi Tanimura, the police officer with the community safety division that arrived at the murder scene after the murder Arai committed, is being chewed out by one of his superiors. Tanimura shrugged it off and left his office only to be told by Chief Hisai not to gamble on duty. Tanimura ignored him and headed to the mahjong parlor, which is something he does regularly.
After he tracked down and beat the man who ratted him out to the police, Tanimura headed to Little Asia. He took a bribe from the man who ran Midori, a Korean salon. The bribe was so Tanimura would keep quiet about the fact he hires illegal immigrants. Tanimura gave the man a picture of Yasuko Saejima, from twenty-five years prior, and asks him to contact him if he sees her. He heads to Homeland, a Chinese restaurant run by a man named Zhao, and gives the bribe money and the money he won in mahjong to him so that he can help the people in Little Asia. Tanimura tells him that he is looking for Yasuko because she might have been the last person to see his father, a police detective, alive after he was killed during the Ueno Saiwa massacre.
Surprisingly, as soon as their conversation was over, Tanimura was contacted by mobile phone and told that a woman matching Yasuko's description had just been spotted. Tanimura goes to the Korean salon to see if the woman really is Yasuko Saejima. Just when Tanimura begins talking to Yasuko, Shibata's men grab her and take her to the docks to kill her.
Tanimura rushes to the docks, beats many yakuza, and heads for Shibata's office. When he gets there he learns that Shibata is hiding Arai from the sixth chairman. Shibata reveals that he never cut off his finger and that he is meeting with Katsuragi the next afternoon at Cafe Alps in Kamurocho.
Just as Shibata is about to rape Yasuko, Arai shoots Shibata many times in the chest. Arai tells Shibata
that he is on Katsuragi's team. Katsuragi and Shibata planned the Uneo Saiwa massacre to get better positions in the Tojo Clan. However, Shibata used that as leverage over Katsuragi to get favors. Because of that, Katsuragi feels that he is no longer useful.
After hearing that Shibata staged the massacre that killed his father, Tanimura burst into the room. Shibata died and Arai ran away, but Tanimura managed to save Yasuko.
Yasuko reveals that Tanimura's father told her that her brother may have pulled the trigger, but he didn't kill the men. He told her that the hit was more than just a war between two factions but rather an orchestration by a powerful force. Tanimura's father told her to wait for him, however, he was killed after their conversation. When he didn't show up for their planned meeting, Yasuko fled Kamurocho.
Tanimura always felt there was something off about his father's death because there was no police investigation and it was classified as accidental even though it was clearly murder.
Yasuko revealed that she killed Shibata and his men because she was contacted by Katsaguragi. He told her he'd save her brother for either one hundred million yen, or if she agreed to murder the men he told her to kill. She also revealed that she was first contacted by a man who said he was a detective in Tokyo. He was the person who introduced her to Katsaguragi.
Katsaguragi told her that he was one of the victims of the massacre and if he testified that her brother was not the killer, the case would have to be re-examined. They conclude that she had been unknowingly killing people who knew the truth.
Yasuko and Tanimura come up with a plan to lure Katsaguragi out. She gives him a key to a car parked in the central parking lot that had a briefcase with 100 million yen. Katsuragi and Tanamura make a plan to meet in front of the Millenium Tower the next day.
Tanimura brings the money and Katsugaragi tells him that his father was killed after he discovered high-up corruption in the Tokyo Police Department. He also tells him that Saejima shot the eighteen Ueno Seiwa men but that is not what killed them.
Unfortunately, the meeting was an ambush, and dozens of Ueno Seiwa men surround Tanimura. As it appeared that Tanimura didn't have a chance, Katsaguri told him that he was going to blow up Homeland and kill Zhao and his employee, Mei. He also revealed that he was the one that killed eighteen of his own men.
Tanimura was saved by a police car with the criminal investigation detective, Junji Sugiuchi, inside. It drove through the middle of the Ueno Seiwa, and then Tanimura ran to Little Asia. He defeated the Ueno Saiwa men who had amassed all around Kamurocho and kept the money safe. He then ran into Homeland and was relieved to see the restaurant, Zhao, and Mei were alright. However, he was surprised that his superior in the community safety division, Satoshi Hisai, was there as well.
Hisai told Tanimura that the information on the police coverup on the Ueno Seiwa massacre that led to his father's death might be in Archive Room 13 at the Tokyo Police headquarters.
In the archive, Tanimura found a case file about the assault on Yoshiharu Ueno, the chairman of the Ueno Seiwa clan. It stated that a lone gunman carried out the attack and that eighteen men were killed. Only two, including Yoshiharu Ueno, survived. The special investigation team was led by Taigi Tanimura, Masayoshi Tanimura's father, and Junji Sugiuchi.
This information surprises Tanimura, as he had never known that his father worked on the case with Sugiuchi. With this new lead, Tanimura and Hisai head back to Kamurocho.
Tanimura then went back to Homeland to pick up the briefcase of money and give it back to Akiyama. Akiyama did not want to take it because he fell in love with Yasuko.
Tanimura filled Akiyama in on the information he learned. Akiyama then reveals that one of the Ueno Saiwa men, Mishima, from the fight with Akiyama and Ihara was still alive. Tanimura decided to meet him at the docks. He then radioed the police so that he can draw out the traitor in the department.
Mishima tells Tamimura that he and Ihara were ordered by Katsuragi to cause a stir at Club Elnard. However, Akiyama ruined the plan. After Akiyama broke a bottle over Mishima's head, he passed out and then woke up in the Champion District, presumably carried there by Ihara. When Mishima went looking for Ihara, he found his dead body. After that, he got scared and ran to the Ueno Saiwa headquarters. He heard Katsuragi talking on the phone. He didn't hear much, but he presumed he was talking to the cops as the word 'police' had come up often. He also heard that Katsuragi killed Ihara as part of his plan, and he planned on killing Mishima next.
Just as Tanimura told him that he would take him into his custody, he was fatally shot by Sugiuchi. Tanimura told Sugiuchi that he had always suspected that Sugiuchi was not a normal detective, as his shoes and watch were too nice for a homicide detective working at murder scenes. Tanimura also told him that he suspected that he was following orders from someone in a higher position with the Tokyo Police.
The police surround Sugiuchi, preventing him from killing Tanimura. Sugiuchi tells the police that they are bound by Japanese law to not shoot their guns. He then tries to leave, but Tanimura does fire his gun. However, Sugiuchi flees by boat and Tanimura chases him. When they dock, Sugiuchi tells Tanimura that he killed his father. Saguichi tells Tanimura that he is really an Ueno Seiwa spy who joined the academy to keep an eye on the police.
On the day of the Ueno Saiwa massacre, Saejima shot the twenty men with guns full of rubber bullets. Katsaguri then shot eighteen of them himself with headshots to make sure they are dead. He then met up with Sugiuchi, who shot Kashiwagi to complete their plan.
However, when deputy commissioner Munikata checks the report, he notices that things don't add up. The men were all shot in the head and he noticed the wounds from the rubber bullets, which were experimental ammunition. He then asks Sugiuchi to introduce him to Sugiuchi. Sugiuchi then allowed himself to be turned in, as he was feeling guilty about being under Munikata's beck and call for thirty years.
However, Tanimura couldn't bring Sugiuchi in as a man on a boat shot him. With his dying breath, he told Tanimura that there was another traitor on the police force. The traitor turned out to be Hisai, who told Munakata over the radio that he was going to take care of both of them. However, to stop Munakata from coming after Tanimura, instead of killing Zhao and his young employee Mei, he shot himself instead.
At Homeland, Tanimura prays over the badges of Sugiuchi and Hisai, who had both died as they were tired of being used by Munakata and Katsuragi for twenty-five years. They also died because they helped Tanimura. Sugiuchi helped him by leading Tanimura to the truth about the traitors in the department, and Hisai died by his own hand because he wanted Munakata to think he had shot Tanimura. Because of their deaths, Tanimura vowed to bring Munakata to justice.
Akiyama arrived at Homeland to tell Tanimura that the district attorney's office had searched Sky Finance and kicked him out of his own office. Officially they were looking for evidence of coercion because they claimed Akiyama's test was forcing people to do things that did not want to do in exchange for money.
