Detective Conan: The Million-dollar Pentagram (Meitantei Konan: Hyakuman Doru no Michishirube (Japanese: 名探偵コナン 100万ドルの五稜星)) is a Japanese animated mystery film directed by Chika Nagaoka. It is the twenty-seventh installment of the Case Closed film series based on the manga series of the same name by Gosho Aoyama, preceded by Black Iron Submarine in 2023. The film was released in Japan on April 12, 2024.^[2]

The current head of the Axoe Zaibatsu, Takuzo Axoe, receives a notice from Kaito Kid. The plan was to steal two wakizashi swords belonging to Toshizo Hijikata, which were stored in a zaibatsu warehouse in Hakodate, Hokkaido. Inspector Nakamori, who is chasing Kid, becomes suspicious as to why Kid, who is supposed to be targeting big jewels, is targeting swords. Around the same time, a kendo tournament was being held in Hakodate, and Heiji Hattori and Soshi Okita came to Hakodate to participate in the tournament, and Conan Edogawa and Kazuha Toyama came to support Heiji. At the venue of the kendo tournament, Kazuha meets Sei Fukujo, a university student who gave an iaide performance . In addition to the tournament, Heiji was looking for scenic spots around Hakodate in order to successfully confess his feelings to Kazuha. Meanwhile, Momiji Ooka, who is Kazuha's love rival and has feelings for Heiji, also visits Hokkaido by helicopter to support Heiji who is participating in a kendo tournament, but the butler, Muga Iori, says, "Hokkaido has a beautiful confession spot." When she hears that "there are many scattered around," she assumes that he is planning to confess to Kazuha, and plots to thwart his plan.

On the day of the crime notice, Heiji sees through Kid's disguise and attempts to corner Kid, who has escaped to the rooftop. Heiji recovers one of Kid's stolen swords and engages Kid in a fight with the sword. He corners Kid with his skillful swordsmanship and cuts Kid's hat off, but Heiji is surprised to see that Kid's face looks exactly like Conan's original form, Shinichi Kudo . Kid took advantage of this opportunity and ran away with one of his swords. Heiji entrusts the other sword he recovered to the police.

Shortly thereafter, the murdered body of a man with a cross-shaped wound on his chest is discovered in the Hakodate warehouse district. The body was identified as Sumito Kugaki, a legal advisor to the Akie Zaibatsu, who was murdered shortly after returning from Dubai, and the contents of his golf bag were taken away. Conan and Heiji suspect that Kid is connected to the incident in which he targeted a sword belonging to the Akie Zaibatsu, and they speculate that the sword was likely in the golf bag. In addition, Detective Yoshihisa Kawazoe, a subordinate of Inspector Nishimura of the Hokkaido Police Department, revealed that the stolen sword was a clue to the treasure that Keizaburo Akie, the first head of the Akie Zaibatsu, had hidden in Hakodate. Because he was deeply involved in the military industry, we hear that the treasure was said to be a weapon that could completely change the course of war at the end of the Edo period. Afterwards, as a result of the police investigation, a man named Brian D. Khadkura emerges as a suspect. Kadokura is outwardly a philanthropist, but in reality he is an arms dealer active throughout Asia, and he is aiming for the Akie family's treasure. Kadokura also possesses two swords that are clues to the treasure of the Akie family that Kugaki had.

Afterwards, Kadokura receives a notice from Kid, and as per the notice, Kid steals the sword that belonged to Kadokura. However, while he is hiding, he is suddenly attacked by a mysterious swordsman wearing a black fox mask. Kid is almost killed by his excellent swordsmanship, but then Conan and Heiji, who have been chasing Kid, arrive. Heiji engages in a sword fight with a mysterious swordsman, and with the help of Conan, manages to defeat him. Heiji sees the cross-shaped cut on Kid's clothes and suspects that the mysterious swordsman is the culprit who murdered Kugaki. Conan also discovers that the mysterious swordsman has traced the signal from the transmitter installed in the sword that Kid stole from Kadokura. Afterwards, Kid explains why he aimed the sword this time as a thank you for his help. The reason why he stole the sword was because he wanted to see what kind of treasure a man had tried to steal but gave up on, and that treasure was the treasure of the Akie family, which Kadokura and Takuzo Akie were also after. According to Kidd, a handwritten note written by Keizaburo Akie was found that contained only the name of the swordsmith Eitatsu Higashikubo, and it was believed that the sword struck by Eiryu Higashikubo was a clue to finding the treasure. It is said to mean becoming. There were six swords in total, and four of them were the two wakizashi that Kid had tried to steal from the Atoe Zaibatsu's storage, and the two that had been stolen from Kadokura. He then says that the remaining two swings are owned by a person named Ryoe Fukujo, who is Sei Fukujo's father . Kid entrusts all the stolen swords to Conan and his friends, saying, "You guys are better at solving mysteries like this, right?" Conan and Heiji head to Ryoe Fukujo's house.

Later, as a clue to the treasure, in addition to Eiryu Higashikubo's six swords, the existence of another sword, the Seiryoto, which has a star-shaped brim, comes to light. However, this was just the beginning of a fierce battle for the treasure of the Akie family.

On 30 September 2023, the official Detective Conan film series X (formerly Twitter) account posted an initial trailer of the movie.^[5]

On 29 November 2023, in the first issue of 2024 for Weekly Shōnen Sunday, the title of the movie has been confirmed as The Million Dollar Pentagram, with a hand-drawn poster by Gosho Aoyama and a synopsis of the film attached, with the release date confirmed as 12 April 2024.^[6][7][8]

On 26 December 2023, a new 60-second trailer and a visual poster featuring Conan, Heiji and Kaito Kid were released.^[9]

On 1 February 2024, the main visual of the film was released. It was also announced that there will be no pre-screening of the film, but a fan meeting will be held ahead of the theatrical release of the film.^[10] The theme song was revealed to be Sōshi Sōai (Japanese: 相思相愛) by Aiko in a 90-second trailer released on 15 February, marking the singer's first collaboration with a Detective Conan movie.^[11][12]