Tang Xiu is a midwifery doctor in a modern village. After delivering a baby, she was nailed in a coffin and buried alive by the mother's husband. After she fell asleep, she found herself traveling to the Kingdom of Xixiao. At that time, the world was divided into four parts, the West Xiao Kingdom, the Dongling Kingdom, the Southern Chu Kingdom, and the Northern Yan Kingdom. In the West Xiao Kingdom, Tang Xiuzhi, the biological sister who transformed into an imperial concubine, fell in love with the King of Xi Xiao, Xiao Fan. However, the West Xiao Kingdom was soon destroyed by the Southern Chu Kingdom, and Xiao Fan gave up his life to save Tang Xiuzhi's life. When Tang Xiuzhi woke up again a few days later, she found herself in the Kingdom of Dongling, and King Dongling was an arrogant man who once wanted to offend her. Tang Xiuzhi devoted herself to saving the captured Xiao Fan, and got the news that Xiao Fan had been executed...