Lin Xiaoya, a rural wife, gives birth to a baby boy with unusually dark skin. Her husband's family immediately accuses her of infidelity, humiliates her in every possible way, and forces her to leave with nothing. A paternity test finally clears her name and unexpectedly uncovers a century-old family secret that the Li family had kept hidden. Seeing through her husband's constant cowardice and blind favoritism toward his family, Lin Xiaoya refuses to back down any longer. She calmly examines the accounts, demands repayment of outstanding debts, and fights for her rightful share of the marital property. In the end, she decisively divorces her husband and leaves with her child, breaking free from her miserable marriage and building a new life through her own efforts.