On a rainy night, Xu Anran carries her son, who has suddenly fainted, and stops a car to beg for help. At first glance, the Old Madam recognizes that the child's features look remarkably like those of her grandson, Lu Jingchuan. The two, who parted ways six years ago because of a misunderstanding, unexpectedly reunite. Dabao is diagnosed with leukemia and urgently needs a transplant. A paternity test confirms that Lu Jingchuan is his father, and he is a perfect donor match. Without hesitation, Lu Jingchuan donates his bone marrow and stays by the child's side as he fights his way through the transplant. A father's love may have come late, but it will never be absent!