Back in 1855, a mysterious stranger, introducing herself as Muse, presented the aspiring composer Pyotr Ilyich Tchaikovsky with a golden tuning fork, which became an inexhaustible source of inspiration for him. After the death of the composer, the tuning fork began its long journey around the world, giving its new owners the joy of creativity, bringing fame and money. But was the price of such success too high? Not a single owner of a tuning fork was lucky enough to die a natural death. And what happened to the tuning fork after the death of its last owner, the world famous composer and conductor Pavel Ivshin? Has he found his new victim?