As the head of the Central Secret Service, Si Zhaojingyin died unexpectedly while performing a secret mission. He was reborn in an ancient dynasty that did not exist in history. He was then entrusted by his elder sister in ancient times to take care of his nephew Ye Jitian, who was 3 years younger than him. When he grew up, Ye Jitian insisted on revenge, and the two of them became farther and farther apart...