In 2499, Wen Xing, the captain of the Special Forces, willingly became a white mouse of the Academy of Sciences in order to save his girlfriend who died unexpectedly, and was sent to the Ming Dynasty a thousand years ago. However, due to an error in the data of the time machine, Wen Xing actually became the emperor's grandson Zhu Yunwen. At that time Zhu Di, the king of Yan, already had the desire to seek power and usurp the throne, and regarded him as a thorn in his side. However, in order to return to the future, Wen Xing had to compromise. Wen Xing got a time machine back home by accident, should he stay or choose to leave? How will Wen Xing deal with his relationship with his lover from another life?