At a time of great unrest in the Bookworld, only the ace literary detective can avert a devastating Genre War --- thing is, Thursday has vanished. Now the written Thursday must answer the call, save the Bookworld, evade capture, and find the actual Thursday! With a clockwork Butler in tow, and Men in Plaid as well as her Designated Love Interest in pursuit, she must reluctantly agree to journey up the mysterious Metaphoric River for answers.