A bookshop renowned for its rare works is mysteriously and filled with copies of a book entitled 1, which doesn't appear to have a publisher or author. The strange almanac describes what happens to humanity in a minute. A police investigation begins and the bookshop staff are placed in solitary confinement by the Bureau for Paranormal Research. As the investigation progresses, the situation becomes more complex and the book becomes increasingly well-known, raising numerous controversies. Plagued by doubts, the protagonist has to face facts: reality only exists in the imagination of individuals.