The story begins when the heroine Sang Mianmian stays overnight at the hero He Wen's house. He Wen treats Sang Mianmian indifferently because she is the niece of her mother's new husband, and is tit-for-tat in school. However, Sang Mianmian always smiles and talks to him softly, like a good person with no temper. Everyone around her also turned to her and spoke for her. He Wen tried every means to reveal her true identity, but unexpectedly discovered that she only ate one morning meal every day, and often skipped meals when she was so hungry that her stomach ached. She kept the money she earned from working neatly in an iron box. Although He Wen didn't understand her excessive frugality, he gradually felt compassion and gradually developed into meticulous and strong care. It was not until later that he learned that Sang Mianmian's father had terminal cancer and needed a lot of money. He finally saw a bit of pain hidden under her nine-point smile, and she finally touched the hot heart hidden under his duplicity...
