Psychologist Gu Yanzhi hid his deep love deep in his heart and went away to fulfill his sister Lin Zhi's engagement. When they returned home and met again, they met her in a bar who was drunk because of her fiancé's betrayal. After an accident overnight, the gentle and restrained Dr. Gu insisted on making her "responsible". While escaping, Lin Zhi discovered that this unrelated brother was her harbor against all wind and rain. After going through rumors and calculations, the two finally shed the label of brother and sister, and went from being cautious to standing side by side. In getting along day and night, they turned their deep love into the sweetest fruit.
