Conan Edogawa, along with the Detective Boys and Professor Hiroshi Agasa, decide to explore the Nishitamashi Twin Towers, where they unexpectedly encounter Ran Mouri, her best friend Sonoko Suzuki, and Ran's father, the renowned Kogorou Mouri. Joining the trio at the towers' grand opening, Conan and his companions find themselves embarking on a private tour of the building's levels. However, as the momentous opening ceremony approaches, their leisurely visit takes a dark turn when three brutal murders occur, seemingly connected to a mysterious Porsche 356A. Amidst the chaos, a sudden explosion rocks the towers, putting lives at risk and prompting urgent evacuation efforts by the authorities. Trapped inside as the elevator malfunctions, Conan and his team are left with the daunting task of safeguarding everyone while unraveling the complex mystery before time runs out.