Rock singer Pei Qingye fell to rock bottom due to a vocal cord surgery error at the peak of his career, and has been trapped in a cage of silence ever since. The arrival of speech rehabilitation specialist Song Yueshu broke his self-enclosed world - she not only deciphered his unique code of tapping on the bedside table, but also got a glimpse of his hidden childhood trauma during their day-to-day interactions.
One builds a high wall with silence, and the other strikes with patience and gentleness. In the silent communication, Song Yueshu gradually pieced together Pei Qingye's fragile past under her cold appearance, and Pei Qingye was also attracted by the warmth in her eyes. When Pei Qingye was finally able to speak again, the out-of-tune birthday song exploded like thunder - it was the last melody that Song Yueshu's biological mother sang before she was adopted.
The paper cup that Pei Qingye always crinkled turned out to be graffiti written by Song Yueshu in the orphanage when he was a child. The gears of fate are turning quietly, and those unspoken secrets and bonds that span time compose a moving piece of music about redemption and love in the alternation of silence and sound.
