Lin Xiu donated her bone marrow to save her boss's son, only to be fired by her boss, Wang Mantang, for alleged absenteeism. Thanks to her exceptional technical skills, she joins Yanchuang and takes her clients with her, plunging her former factory into crisis. Faced with oppression, scams, and threats from Wang Mantang and his son, Lin Xiu steadfastly upholds her principles and unexpectedly uncovers the truth about her daughter Niannian's parentage. With the support of Shen Yan and her fellow workers, she rebuilds the factory and finds family and love, while Wang Mantang pays the price for his ingratitude.