Ran, Sonoko, and Conan are on the bus ride to Haido Hotel. Sonoko felt like that someone touched her butt. She caught the guy in the blue hat and accuses him that he's the pervert. The guy in the blue hat tells Sonoko that he's not a pervert but Sonoko thinks he's lying. So she told Ran to beat him up. Ran does as she says so she kicks but the guy in the blue hat blocks Ran's kick with his leg. He punches and Ran dodges. He kicks and Ran dodges again. Ran realizes that her opponent is using Jeet Kune Do. The guy in the blue hat is trying to explain that he's not a pervert but Conan explain for him instead. Conan saw that the real pervert was about to touch Sonoko's butt and the guy in the blue hat stopped the pervert. Sonoko got really mad at the real pervert. When the bus stops, the pervert got out quickly and runs away. Ran apologizes to the guy in the blue hat and he says it's okay. He asks where Ran is going and she told him that she and her friends are going to the Haido Hotel. The guy in the blue hat is going there too. He also thank Conan for explaining his innocence that he's not a pervert. When they arrived at the hotel, the guy in the blue hat is making a reservation but it seems he's having problems. Conan wants to eat cake so Ran, Sonoko, and Conan are going to look for a place to eat cake at the second floor of the hotel. When they're about to take the elevator, the woman named Toshiko Hirukawa came out of the elevator. She asks Conan where he's going and Conan told Hirukawa that he's going to cake buffet at the second floor. Hirukawa told Conan that he can't use the elevator because she says it goes to the annex. Conan thought the annex was under the renovation. Ran apologizes to Hirukawa and she says it's okay. She suggest that they should help each other when in need. Hirukawa's friends found Hirukawa and she apologizes them for keeping them waiting. While Ran, Sonoko, and Conan left, the man mentions how the person is doing. Hirukawa explain that t

After investigating the room, Sera declares the culprit.

Isao Sawaguri came to the Mouri Detective Agency and brought together three female novelists he believe are responsible for his younger sister Miku's death the previous month. Isao threatens to blow up the Agency unless Kogoro reveals to him the truth about his sister's death and reveals her murderer

Sawaguri, pleased to have another detective to find the culprit, obeys his requests to take pictures of the hostage's books which were autographed by Miku. During the course of the investigation, the authorities lose the chance to snipe Sawaguri after Ran closes the curtain as she believes Shinichi can find a solution to prevent any deaths. Miku's blog post reveals her last three visitors were from an elephant, a fox, and a rat. Conan explains the animals were based on the hostage's professions: The elephant is Sumika Nihei, due to her husband's seal designs is similar to an elephant's tusk; Shinobu Yuchi is the fox since she is a bakery and her food is colored like a fox's coat; and the rat is Tamami Mitsui whom is a stonemasonry which is gray like a rat's coat. In response, Sawaguri prepares to kill Mitsui.

Conan declares Mitsui is innocent since she was witnessed leaving Miku's room; Sawaguri inferred the culprit crossed over from the balcony and left by his room. As for Miku's death, Conan explains she was mimicking the suicide of the main character in her book. Sawaguri becomes distraught as a result and is taken in by the authorities.