Five years ago, Gu Chenshi was drugged and had a relationship with Song Siqing, which led to her pregnancy and the birth of a child. However, the stepmother, Wang Ping, abandoned the newborn. By a twist of fate, the child was adopted by Gu Chenshi himself. Song Siqing searched for the child for five years with no result. Then, one day, while passing by a kindergarten, she was approached by the child, Gu Yueni. Meanwhile, forced by her family to take her sister's place in a marriage alliance with the Gu family, Song became entangled in the conflicts between the two families. Throughout this turmoil, the truth was finally revealed.
