The story follows (Guan Chang), an AI graduate student who is burdened by guilt following the death of her twin sister. To "resurrect" her sister, she attempts to develop an AI program, which leads her to cross paths with Gu Yu (Liu Xuwei), a reserved but brilliant AI expert.

: Both leads have deep-seated emotional wounds—Jiang Yiyi from her sister's loss and Gu Yu from a past psychological disorder.

The 2023 Chinese drama (also known as Qing Mei Suan Suan Ni Wei Tian or Sour Green Plum, Your Subtle Sweetness ) is a warm, "healing" youth romance that blends modern artificial intelligence with themes of psychological trauma and childhood connections. Starring Liu Xuwei and Guan Chang , the series has quietly earned a positive reputation for its sincere portrayal of friendship and family bonds. Plot Overview