After being schemed against by her stepmother and trapped in a desperate situation for twenty years, Shen Xingruo devotes herself to raising her daughter, Shen Nian, despite their difficult circumstances. Like a faint light illuminating the way, she teaches her daughter to study and understand the world. Shen Nian studies diligently and eventually achieves an outstanding score of 720 on her exams. Mother and daughter secretly plot their escape from their predicament. Meanwhile, the villains forge documents and deliberately frame them, hoping to seize the family's assets. Patiently enduring their hardships, the two gather every clue. At a birthday banquet, they present all the evidence, unravel the layers of deception, and reveal the truth about events buried for twenty years, waiting for justice to finally prevail.