On the grand inauguration day of Tokyo's latest subway line, the Touto Line, a bombing shatters the festivities. Amidst chaos, Conan Edogawa's swift actions prevent a catastrophe, rescuing the governor and passengers aboard. Intrigued by the attack, Conan delves into the governor's past, unearthing his involvement in a village's demolition for the Kitanosawa Dam. Convinced of a connection, Conan, with Ran Mouri, Kogorou Mouri, Professor Agasa, Sonoko Suzuki, and the Detective Boys, ventures to the village to investigate. Meeting ex-residents, they find themselves entangled in a web of secrets. As one puzzle unfolds, a brutal murder grips the village. Conan senses a looming threat and resolves to unveil the hidden truths behind these ominous events before it's too late.