The Last Day of the Covenant is also the final day of Ye Qian, the revered Emperor of Nine Heavens Group, working as a car mechanic in an auto repair shop. By chance, he encounters Chu Ran, the CEO of the Chu Corporation, who comes in to have her car serviced. During her visit, Ye Qian overhears that the Chu Corporation is being targeted by foreign capital. Drawing on his wisdom and experience, Ye Qian advises Chu Ran to revive Project No. 3, a venture once pursued by the Nine Heavens International Group. His strategy proves successful, helping the Chu Corporation navigate the crisis. However, when Ye Qian publicly reveals his true identity as the Emperor of the Nine Heavens Group, he faces widespread doubt and opposition. Even his wife, who has always looked down on him, decides to divorce him. Despite the setbacks, with Chu Ran's unwavering support, Ye Qian manages to bring justice to those who underestimated him. In a grand and triumphant return ceremony, he finally steps into the spotlight as the Emperor
