In a world where martial arts and mystery coexist, there are sect disputes on the surface, and unexplained visions and strange stories in the dark.
Wandering violinist Gu Liuzheng, whose stage name is "The Stringbreaker", carries an old violin with a broken seventh string and travels around the world by performing arts. He possesses the "Three Ways of Piano Sound" - hearing the strings and listening to the heart, distinguishing traces and listening to the wind, and asking the sky for murder. He can read lies from the heartbeat and reconstruct the scene of the murder from the echo.
Massacres of family members, missing bodyguards, serial murders of ghost pianos... Everywhere he went, he was involved in bizarre murders. Behind the seven cases, they all point to the truth about the collapse of Tianyin Tower twenty years ago, and an erased name - his own.
