Sensation! An exhibition of Scythian gold will soon open in the city museum, and the day before there will be a ceremonial presentation of the main exhibit - the world-famous pectoral, a priceless treasure of the nation. Only very strange guests gathered for this reception: a mad poetess, a mad scientist, a mysterious girl who keeps disappearing into nowhere... Is it any wonder that the main exhibit was stolen! Fortunately, Murka and Kisonka, detectives from the White Goose agency, were also among those invited. Now their goal is to find the kidnapper at any cost...