A prodigious five-year-old from Zu An, Li Shaojie, is a highly skilled and civilized sound engineer, mixer, and music producer. Behind the scenes, he's a legendary 'car crash' maker, his influence casting a shadow over the music industry. His work leads to numerous mishaps: a famous powerhouse vocalist's disastrous performance, a high-pitched prince's concert with three consecutive off-key notes, and a renowned pianist's breakdown after a disastrous performance. When a collaborating star suffers from diarrhea before a performance, Li Shaojie exclaims, "I have to go on stage myself! I'll give you a demonstration!" He then shows them what a truly amazing live performance is.