Shen Qingtang traveled through time and became the third daughter of the Shen family who became pregnant while in exile. In order to avoid being framed by her uncle, she separated her parents and her second brother. She made a living by making soap with modern techniques and settled down in the valley. When she rescued the amnesiac prince from his quarterly banquet, the two gradually fell in love. While Shen Qingtang was doing business and opening a store, leading his family to open up wasteland and become rich, he was also helping his second brother in scientific research, fighting against his uncle's second wife and evil forces, and gave birth to twins safely. During the banquet, the memory gradually recovered and the true identity was revealed. The two worked together to quell the civil strife and punish the traitors. Finally, at the banquet, Shen Qingtang ascended the throne. Shen Qingtang became the queen, and the whole family was safe and honored.