Modern sister Qiao Chunyun and her sister Qiao Sui, who was three years younger than her, died in a car accident. However, after three days of "sleeping", the two sisters woke up and found that they had traveled to ancient times. Later, the elder sister was drafted into the palace, but the younger sister was not allowed to participate in the draft because she was deeply loved by the crown prince Wang Huanzhouyu. The elder sister was also deeply loved by the Emperor Wang Huan Qiufan in the palace. The younger sister also fell in love with the prince and became the princess. Life in the palace is not that simple...