When thirteen specters possess an ancient castle, a detective finds themselves ensnared in a temporal cycle—each loop rewinding to confront the same horrifying truth. A kidnapping from ages past awakens vengeful gods determined to punish mankind, shattering the fragile barrier between reason and madness. In a world where sanity crumbles, investigators must piece together impossible mysteries and document horrors that defy comprehension. The true measure of their skill lies not in unraveling the bizarre, but in surviving long enough to chronicle what they've witnessed.