Yi Min is a deaf-mute girl. Her mother died young, and her father is always busy with the company. In order to gain total control over her, her stepmother, He Sha, deliberately keeps her out of special school and instead abandons her to fend for herself in a regular school. Yi Min’s life is stagnant, lonely, and stifling. No one understands her, and no one cares about her.
Then Xie Yunzhou transfers to her school. His parents favor his younger brother, and he has grown rebellious; getting into fights and causing trouble is part of his everyday life. After transferring to Minxi Middle School, he notices the deaf-mute girl who is always by herself. At first, he is merely curious, but soon he is drawn to her resilience and quiet nature. He starts learning sign language and gradually approaches her, and the two develop feelings for each other.
However, not long after they get together, Yi Min suddenly disappears without offering any explanation. Xie Yunzhou searches everywhere, but finds nothing. Four years later, when they meet again, everything has changed.
As they reunite, the truth about what happened back then slowly comes to light...