After a divorce, Gu Yun Yue raises her daughter alone. Struggling with financial pressure, she entrusts her daughter to her brother and sister-in-law, only for the child to suffer abuse. When her daughter falls critically ill, Gu Yun Yue attempts to return home, but she is obstructed and mistakenly hears of her daughter's death. Devastated by the truth, Gu Yun Yue seeks revenge by exposing the abuse through her daughter's diary, taking her brother and sister-in-law to court. In her daughter's memory, she establishes a foundation to help rural children. As tensions rise in her family, Gu Yun Yue uncovers more secrets, leading her to a tragic confrontation where she fights for justice. Her unwavering love for her daughter fuels her pursuit of truth, even as it costs her everything.