After the death of Yao Weiqing’s father, stepmother Han Yunyu, who is three years her stepdaughter’s senior, marries Wang Yuzhang. Yaohas been in love with Du Muling for three years. Du becomes a court physician and proposes to the young lady, but on the same day Yao is taken as a concubine by Han Emperor Cheng, who passes by during his inspection tour.
Yao gives birth to the emperor’s son, Liu Zhen. The empress dowager, however, regards the little prince as a threat and orders the stepmother’s husband,Wang, to kill the child. Learning of the plot, the stepmother exchanges the prince with her own son. Wang kills the baby and is caught red-handed by the emperor. Emboldened by the empress dowager's support, Wang claims that the child is the son of Yaoand Du. Du is forced to commit suicide, and the concubine is banished to the palace for disfavored consorts. Soon the empress dowager forces the concubine to drown herself in the lake. Despising her husband for what he has done, the stepmother takes the baby prince away and goes to live in seclusion.
Sixteen years later, the stepmother has brought Liu Zhen up to adulthood. Coincidence reunites stepmotherYunyu and Liu Zhen with Yao, who has survived against all odds. Soon, when the emperor is on his inspection tour nearby, a plan brings the concubine and the prince to the emperor, who, recognizing his son and concubine, realizes the truth. Liu Zhen is made crown prince. Wang and the empres