Zhou Yu burned thousands of confession letters in the school, and no one understood his madness until Lin Zhao found an unburned letter in the ashes - an anonymous confession she wrote to the president of the piano club three years ago. When the school bully Chen Jin attempts to blackmail letters, Su Mian from the psychology club quietly collects evidence, Han Ye from the piano club prepares to use sound waves to restore emotions, and behind the silence of the old principal lies a shocking old case. A storm about silence, redemption and love has just begun. They are all waiting for who dares to say the words "I understand you" first.
