The Fraggle Horn is stolen from the Great Hall, shortly before the World's Oldest Fraggle intended to call a meeting to host a party in honor of Uncle Traveling Matt. Inspector Red (clad in a Bogey-style fedora and trenchoat) is on the case to determine who took it. She soon finds herself rashly accusing several denizens of the Rock in turn, each with an ostensible motive for taking the horn: Traveling Matt himself (embarrassed over the loss of his hat and toupee), Boober (who cares little for the noise and frivolity of meetings and parties which the horn represents), and Marlon (who lost his lucky pebble in it).