Five years ago, Zhou Yuan became embroiled in an economic case. In order not to implicate his wife and child, he ruthlessly forced Lin Lan to divorce, separating from his son ever since. Five years later, he unexpectedly moved across the door from his ex-wife's home, but the son he thought of day and night no longer recognized him. An old wooden pendant carved with the character for Yuan gradually uncovers the sealed attachment between father and son, and also makes the relationship between Lin Lan and her current partner Zhao Dayong tense. As the child discovers his identity, the father and son finally recognize each other, and Zhou Yuan regains the opportunity to pick up and drop off his son for school. However, Lin Lan finds it hard to let go of the hurt from back then. Can this reunion, delayed by five years, make the broken family complete again?