After Jiang Qingyu gets dumped, she drinks to drown her sorrows and unexpectedly spends a night with Lu Siqi before leaving. When she discovers she is pregnant, she gives birth to their daughter, Jiang Xiaotang, and raises her alone. Five years later, Gu Yan saves the little girl when she suffers a nosebleed. Her blue eyes make him suspect that she is Lu Siqi's daughter. While searching for someone, Lu Siqi meets the mother and daughter but fails to recognize their identities. As he gradually falls for them, the truth eventually comes to light, and the two reunite as a couple.