Two children were abducted and separated when young. One broke her leg to save the other. Twenty years later, a man is forced to marry into a wealthy family, so they ask their adopted daughter to marry in his place. She is persecuted by his relatives, poisoned into muteness, and impersonated by a scheming woman who conspired with traffickers. When he reads her diary and learns the truth, his leg is cured by her care. After countless crises, her true identity is revealed, the conspiracy is exposed, and the two finally reunite in marriage.
