Qiao Ran, the ignored eldest daughter of the Qiao family, practiced medicine abroad for many years. During an accident, she saved Lin Yue, the eldest son of the Lin family, but ended up getting injured herself. Due to the Qiao family's refusal to provide treatment, she missed the optimal rescue time, and excessive blood loss led to cerebral hypoxia, causing her to lose her memories of the accident. Three months later, a recovered Lin Yue sought out his savior to repay the favor, but Qiao Shishi, the second daughter of the Qiao family, falsely claimed to be his benefactor, becoming Lin Yue's fiancée. However, through their interactions, Lin Yue gradually felt that Qiao Ran was the person he was truly looking for.
