Kōnan Takaaki, a rookie editor, visits a mysterious mansion in Kamakura with a research team to cover a feature for an occult magazine about the rumored ghosts of the Clock Tower. Designed by the famed architect Nakamura Seiji, the eerie mansion becomes the site of a three-day séance led by a young psychic. But strange events soon begin to unfold inside the isolated building.

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After hearing about the Clock Tower, Shikatani visits the mansion with a student named Fukunishi. Meanwhile, during the séance, one of the participants suddenly disappears and bloodstains are discovered in the room. As night falls, a masked figure attacks the group trapped inside the building.

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Shikatani and Fukunishi return to the Clock Tower to investigate a mysterious poem left behind by the mansion’s former owner. As they uncover dark stories about the house’s past, another participant is murdered inside the locked building. With no way out, the survivors face the terror of a killer hiding among them.

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Searching for clues behind the poem “Goddess of Silence,” Shikatani and Fukunishi visit people connected to the mansion’s former owner. Meanwhile, another murder occurs inside the Clock Tower. Suspicion grows among the remaining participants as they begin to fear the killer may be one of them.

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Kōnan and the others briefly see someone who may be the culprit, but the figure disappears without a trace. As the mystery deepens, Kōnan reviews the events so far while another participant struggles to recall a forgotten incident from the past. Shikatani and Fukunishi continue searching the mansion for hidden tricks within Nakamura Seiji’s design.

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Trapped inside the old building, Kōnan and the remaining survivors desperately search for the truth behind the murders. Convinced that the mansion hides a secret mechanism designed by Nakamura Seiji, they race to uncover the truth before the killer strikes again.

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While visiting the Clock Tower, Shikatani is alerted by the servant Tadokoro to something unusual and realizes that an emergency has occurred. Entering the old building where Kounan and the others were trapped, he is confronted with a horrifying scene filled with multiple corpses, while a tragic incident also befalls Fukunishi. Days later, after receiving new information from his brother, Detective Shimada Osamu, Shikatani begins to re-examine the events surrounding the deadly tragedy within the Clock Tower.

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A few days after the tragedy, on August 5, Shikatani returns to the Clock Tower in search of the truth. Determined to uncover what really happened and decipher the “poem” left by the tower’s owner, he presents his own deductions. Just as everything seems to reach a conclusion, another bizarre incident unfolds… What awaits beyond the mystery of the “Silent Goddess’s Song”? A shocking finale awaits.

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