The long-awaited cultural festival has begun, but the Classics Club, of which Houtarou Oreki is a member, has run into trouble again: they accidentally printed too many copies of their club anthology, *The Niece of Time*. Just as the club members are worrying over what to do, a string of thefts suddenly breaks out at school. The stolen items range from Go stones and tarot cards to water guns. Why not solve the “case” in one fell swoop and send the Classics Club's reputation soaring? Our goal is to sell every last copy of the anthology! Once again, Houtarou Oreki is pushed into the spotlight by his enthusiastic friends, and the challenge begins...
