16-Year-old Zhao Feifei is a piano student at Xinghai Middle School. The notes flowing from her fingertips are like magic. She also has a unique hobby - she is obsessed with snail noodles. The spicy and sour taste always allows her to find inspiration among the confusing clues. After a concert, she found the corpse of a tuner who died mysteriously backstage. Snail powder seasoning packets were scattered around the deceased, and strange traces of notes remained on the piano keys. With keen observation and extraordinary reasoning ability, Zhao Feifei was able to get rid of the cocoon, but encountered mysterious obstacles during the investigation. When she joins hands with the calm and wise detective Lu Chen, she gradually uncovers the shocking secret hidden behind the case, which is actually closely related to the missing memory of her childhood. In a detective journey where the sound of the piano and the fragrance of snails interweave, can Zhao Feifei break through the fog and play the music of the truth?
