Legend has it that in ancient China, there was once a vassal state called Qin Ning. King Qin Ning had three daughters, leaving the throne without an heir. The treacherous minister Wu Gui plotted to usurp the throne, embezzling public funds to expand his power, which caused a devastating flood. He also exploited the people's superstition and fear, conspiring with the imperial advisor to cast spells and frame the newborn third princess, claiming she was a jinx and would be sacrificed to the river god. The Duke of Protector secretly protected her, allowing the third princess to escape the calamity and live among the common people. She was adopted and raised by a pharmacist named Song at the foot of Xiangshan Mountain. She and Song's son, Song Duo, grew up together and fell in love. However, Song's mother forced them apart, compelling her to leave home. After enduring countless hardships, she regained her princess status with the help of the Duke of Protector. Kind-hearted and compassionate, she was deeply loved by the people. The treacherous minister Wu Gui, to achieve his goal of usurping the throne, colluded with foreign enemies to launch a rebellion, forcing the third princess to marry his own son. In order to quell the war and allow the people to live in peace, the Third Princess sacrificed her life for the greater good, leaving behind a poignant and beautiful legend.