Flower shop girl Xu Zhiwei is temporarily rented by six-year-old boy Gu Xingchen with a one-yuan coin to act as his mother for a parent-child sports meeting. At the sports meeting, she helps the child win the championship, but suffers misunderstanding and monetary humiliation from the child's father, Gu Chenzhou. During an accidental conflict, Gu Chenzhou recognizes that Xu Zhiwei is the girl who saved him on a snowy night ten years ago. Facing the dilemma of her flower shop being maliciously smashed, Xu Zhiwei relies on her superb floral art to start a national-style livestream in the ten-thousand-mu flower field and make a comeback against the wind. Past misunderstandings are unraveled one by one, a single coin ties together mutual redemption, and she ultimately becomes Gu Chenzhou's lover and Gu Xingchen's true family.