Crown Prince Qin Shiyan falls deeply in love with the commoner Shen Tangli, willing to abandon his position as crown prince to live in seclusion with her. Unwilling to let imperial power slip away, the Empress Dowager secretly sets a trap that causes Shen Tangli to fall into the river and lose her memory. Six years of time flow by, Qin Shiyan ascends the throne, and accidentally encounters Shen Tangli, who is wandering with their young son Xiaoman. Xiaoman enters the palace with quick wit, and after going through many twists and turns, facilitates the reunion of his family. After Shen Tangli regains her memory, she joins hands with Qin Shiyan to shatter the Empress Dowager's plot to usurp the throne. When the dust settles, the emperor lays down his authority, passes the throne to his son, and sets off for the mountains and rivers with his beloved.