Lin Yu is a piano tuner suffering from progressive hearing loss, while Jiang Che is a popular singer-songwriter. The two met and fell in love when they were students, but separated five years ago due to a misunderstanding. Five years later, Jiang Che's music studio needed a tuner, and fate made them meet again. At this time, Lin Yu's left ear was completely deaf, and the hearing in his right ear was also declining rapidly. He hid his illness and took over the job just to listen to Jiang Che's singing a few more times. When the secret was finally exposed, behind the truth was the "last gift" Lin Yu silently prepared - he completed sign language choreography for each of Jiang Che's new songs, hoping that he would "hear" his songs forever.