A meticulous, yet utterly paranoid, librarian, trying to prevent the theft of a rare and valuable manuscript, encounters a series of ludicrous setbacks involving a group of bumbling book thieves, a malfunctioning security system, and a rogue cat. As the chaos escalates, they discover a hidden message within the manuscript that reveals a long-lost secret, throwing the entire library and their own life into a whirlwind of intrigue and adventure.