In the remote South Korean village of Hope Harbor, police chief Bum-seok and officer Sung-ae are called to investigate a mysterious creature wreaking havoc on the community. But all is not as it seems, and perceptions can be misleading. What begins as ignorance plants the seed of disaster, escalating through human conflict into a tragedy of cosmic proportions.
As a new 10,000-yen banknote featuring the Touto Tower design is issued and the nation is swept up in excitement, Conan and the Junior Detective League, accompanied by Professor Agasa, Ran, and Sonoko, visit the Nagano factory of the Japan Banknote Printing Bureau. Meanwhile, counterfeit money is discovered at the scene of a murder in Tokyo, prompting the Metropolitan Police Department to establish an investigation headquarters. As the unprecedented circulation of counterfeit new banknotes throws the public into confusion, Conan and Heiji head to Osaka, where the counterfeit money is believed to have been printed.
When tragedy strikes within the walls of the Ōoku, twisted human passions and festering grudges spawn the Medicine Seller's most fearsome opponent yet.