The naive steppe princess Murong Zhao is plotted by her step-sister to take her place in a marriage alliance, marrying Yan Che, the Sheng emperor rumored to be bloodthirsty and cruel. On their wedding night, her innocent and gluttonous appearance unexpectedly touches the emperor's heartstrings, dissolving the threat of death. In the treacherous inner palace, she warms the tyrant's ice with clumsy sincerity, stepping by step going from a scapegoat abandoned child to his only apple of the eye. Innocence and scheming clash, sincere devotion knocks open a desolate and cruel heart gate, finally becoming a legend of mutual redemption and devoted love.