On a rainy night, Su Nian signs a stand-in contract to save her critically ill adoptive mother: for a hundred days, she'll impersonate Fu Hansheng's lover, who vanished seven years ago, in exchange for a million yuan. She steps into the memorial-like "Quiet Garden," puts on another woman's clothes and imitates her voice, only to discover that the face in the photographs is identical to her own, right down to the crescent-shaped birthmark on her wrist.
Just as she begins to suspect that she is the missing woman, the real Lin Zhiyi returns. Framed, cast out, and sent to a psychiatric hospital, she discovers in her darkest hour that she's pregnant.
Four years later, independent jewelry designer "Ji Nuan" returns with her gifted son and reunites with Fu Hansheng at the negotiating table. Cold as ice, she treats him like a stranger. Meanwhile, a miniature version of Fu Hansheng looks up at him in the banquet hall and asks in front of everyone:
"Uncle, we look so much alike. Are you my dad?"
She's the woman he searched for for seven years, and the one he gave up with his own hands. As doubts about the stand-in, mysteries surrounding their identities, and vengeance for a mother's murder intertwine, can they still hear each other's echoes among the stars?
