Lu Jianguo, the biological father who disappeared for more than a decade, suddenly comes looking for her, offering 500,000 to hope that Lu Yun will donate bone marrow for him and his mistress's daughter, Lu Ting. Lu Yun, who has had enough of a life of poverty, constantly raises her conditions and finalizes the transaction in her game of wits with the Lu family. After delving into this wealthy family, Lu Yun uncovers the heavy lies hidden by the Lu family and sees through Lu Jianguo's selfishness. This bone marrow transaction slowly changes the relationship between Lu Yun and Lu Ting. After experiencing the tug-of-war of family affection and life-and-death trials, Lu Yun understands the life teachings left by her mother, walks out of past pains, and lives to be an independent and clear-headed version of herself.