Sheng Wanyi has been raised single-handedly by her mother Sheng Minglan since childhood, and the mother and daughter depend on each other with deep affection. To avoid being separated from her mom even after marriage, she simply marries Lu Jingyan, the only son of her stepfather Lu Chongshan, and moves into the Lu family together with her mom. Expecting a happy and complete family life from then on, she never imagined that Lu Chongshan's former first love Xue Mengqin would suddenly burst into their lives with her daughter Xue Yutong, not only provoking Sheng Minglan at every turn but also attempting to ruin the two families. Facing the closing-in "green tea mother and daughter," Sheng Wanyi does not back down at all, firmly standing by her mom's side; and Sheng Minglan always fiercely protects her daughter.