Su Li was originally a modern independent woman. She accidentally traveled to ancient times due to a bronze mirror and became a neglected princess. In a strange world, she made a fool of herself due to a mistake at a palace banquet, but received the understanding look of General Shen Yi. After that, the two met many times and gradually fell in love. However, when a border war broke out and Shen Yi was injured during the battle, Su Li looked for him regardless of the danger. However, the imperial court announced that she would be married off. Shen Yi disobeyed the emperor's order for her, but his life and death were uncertain during the escape. In the end, Su Li was brought back to the capital to get married. Many years later, she returned to modern times thanks to the bronze mirror, but when Shen Yi returned from ancient times, there was no trace of her. A lovesickness that spans thousands of years, leaving endless regrets and nostalgia.