In her past life, Su Lanting's identity was usurped and replaced, leaving a lifetime of regret. Reborn back to 1983, facing her mother's partiality, her step-sister's usurpation and replacement, and her fiancé's betrayal, she no longer endures it, step by step gathering evidence and tearing apart lies. In the end, a documentary makes her true identity public, the impostor is exposed on the spot, and a ruined life has only just begun.