Kenya Seiki (Toshihito Kokubo), the owner of a real estate company, is found dead in the middle of a joint party. Yu Amagi (Noriyuki Higashiyama) and others will be present at the scene. Cash was withdrawn from the victim's wallet and accessories were stolen, suggesting the possibility of a crime aimed at picking up things.
On the other hand, Michitoshi Sakashita (Nozomu Kotaki) decides to investigate the identity of the suicide by jumping who happened to be at the scene. Although he himself has a strong desire to pursue the murder case, Amagi reluctantly begins to collect information on his computer. Shuntaro Domoto (Kinya Kitaoji) silently stared at the appearance of Satoshi Komiyaji.
Eventually, from the results of Domoto's anatomy, there were multiple burn marks of 'Gut-yaki' on the arm of the victim, Seiki, and Shinichi Matsumiya (Furusawa), the representative of the real estate company who was the first discoverer who participated in the same joint party. According to Ren), it was discovered that the victim was also doing something close to raising the ground in the law. Is it the crime of a person who had a grudge against the victim who was pushing for eviction by any means?
Meanwhile, Satoshi Komiyaji, who was still unable to identify the suicide victim, decided that he would like to participate in the investigation of the murder case. As a result, he took over the investigation of the suicide, and Komiyaji was able to participate in the investigation of the murder case.
After hearing the story of Kojiro Takanashi (Shuji Kashiwabara), the manager of the apartment, and Ichiro Horio (Tomoharu Hasegawa), a man who was forced to evict from Seiki, Amaki and his colleagues follow his whereabouts. Visit the cardboard house to get it. But for some reason there are other members of the new full-time investigation team to check the identity of the suicide ...!?
Two incidents that were connected in an unexpected way. Did the criminal commit suicide after killing the victim? However, I was worried that there was Amagi.

Japanese sword one-handed actor Tatsuya Makino (Yagami Ren) and actress Risa Hamada (Yoko Mitsuya) with a bow gun are facing each other. Eventually the scene moves and a bow gun is fired at Makino, but the arrow is real ...
Yu Amagi (Noriyuki Higashiyama), Yoshiki Ebisawa (Seiichi Tanabe), and Shin Aoyama (Takashi Tsukamoto) will be present at the scene. Makino, who died with a crossbow arrow stuck in his chest, is a national star whose Hollywood debut is scheduled for next year, and it seems that the media has already sniffed his death. There were two types of crossbows, real and dummy, for shooting, but Hamada said that he fired them without noticing that they were real. Was it just an accident, or was someone deliberately substituting it ...!?
According to Aoyama, there are 335 people in the studio, including employees, filmmakers, actors, and staff, and no one has gone out since the incident. With 335 suspects, Amagi sharpens his eyes, saying, 'There is a criminal in this studio ...'. We start questioning one by one, but everyone is suspicious and has a habit ...
Eventually, Amagi, Ebisawa, Aoyama and others learn of the shocking fact that Makino, who was a popular actor, was actually a villain who randomly touched her actress, and there was a black rumor about meds. On the other hand, Takumi Nonomura (Jin Shirasu), who had been listening to about four suspicious fires that have occurred in the last three months, learned that there was a fuss in the studio, and Takashi Machimura (photographer cleaner) I talked to Hiroo Ohtaka) and explored the relationship with the continuous suspicious fire.
Is Makino's death an 'accident' or an 'incident' !? Amagi and his colleagues challenge the mystery of a huge closed room called a studio !!