Twin sisters Gu Qinglan and Gu Qinghe were tragically separated in childhood. Years later, Gu Qinghe, who is seriously ill, asks her identical-looking elder sister, Gu Qinglan, to protect her nephew, Gu Yan, in her place. After marrying into the Lu family, Gu Yan constantly suffers humiliation and schemes at the hands of the Lu family, and is even deliberately trapped in a humiliating situation. Concealing her identity, Gu Qinglan systematically dismantles the Lu family's schemes and gathers all the truth. Gu Yan finally comes to his senses and decisively breaks free from his constraints. The sisters join forces to expose the Lu family's hypocritical facade. After weathering numerous upheavals, they finally achieve the long-awaited reunion of their family, and everyone finds their own place in life.