Shu Ting comes home and catches Suo Lang behaving intimately with a strange woman. Out of anger, she questions him, but Suo Lang treats her coldly and even brushes her off with money, eventually leading to their divorce. After the divorce, Shu Ting raises their child alone, facing a hard life, and is forced to ask Suo Lang for help once again, only to be heartlessly rejected once more. Little does she know that all of this was meticulously designed by Suo Lang as a farewell to hide his illness and avoid dragging down his wife and child. Half a year later, the woman gives the letter left behind by Suo Lang to Shu Ting. The letter is filled with past love and the truth of his helplessness. Holding the letter, Shu Ting bursts into heartbroken tears, finally understanding that the deepest love is keeping the pain to oneself and leaving hope to the one loved.