After a peculiar invitation, Kogorou Mouri visits Miracle Land theme park with his daughter Ran, Conan Edogawa, and the Detective Boys. They are swiftly drawn into solving an old case by a mysterious figure. Unveiling the invitation's true purpose as a dangerous scheme, Kogorou and Conan have a mere 12 hours to crack the case. Supported by allies like Heiji Hattori, Kaitou Kid, and Saguru Hakuba, the team must decipher the intricate clues, unmask the culprit, and ensure justice prevails in a race against time.