Twenty years ago, in a classroom, Li Yaqing took out 26 yuan to help the impoverished Su Hao pay the remainder of his tuition, and her kindness brought light to his dark childhood. Twenty years later, Li Yaqing falls into trouble. Her husband, Huang Dafa, runs off with the factory's money, abandons his wife and daughter, and elopes with his mistress. With workers demanding unpaid wages and thugs bullying them, the mother and daughter are driven to desperation. Upon hearing the news, Su Hao, now a billionaire CEO, rushes to her side overnight. He gathers evidence, stands up to the villains, and repeatedly risks his life to protect her and her daughter, Niannian. After surviving kidnappings and life-or-death trials in a raging fire, the two overcome every hardship together. The small act of kindness from years ago ultimately blossoms into a profound love that lasts a lifetime.