Su Wantang, a farm girl from the south of the Yangtze River, was mistakenly replaced by the nanny of the Hou Mansion when she was a baby. She was found by the Hou Mansion sixteen years later, only to find that the fake daughter Su Mingwei had assumed the identity of the legitimate daughter and was engaged to her childhood sweetheart Gu Zhaoheng. After entering the Hou Mansion, Su Wantang faced the frame-up of the fake daughter and the difficulties of the Hou Mansion. With perseverance and wisdom, she gradually uncovered the truth about the wrong exchange. At the same time, she and Gu Zhaoheng went from misunderstanding to acquaintance, and finally regained their identity and gained love. The highlight lies in the adversity growth of the real daughter without golden fingers, the battle of wits between the real and fake daughter, and the two-way redemption of the emotional line.