Nangong Yu, a top student in the history department, was reborn in the late Yuan Dynasty, possessed and died of hunger, and was actually bound to a dysfunctional "mentally retarded system". After accidentally rescuing the beggar Zhu Chongba (Zhu Yuanzhang), he relied on his advanced knowledge to help the real dragon counterattack the founding emperor from the beggar, while surviving in the troubled times. She has good luck with her love life, dealing with beauties and close friends; but she is also stabbed in the back by her brothers. He also discovered that there is a traveler organization lurking in this world that disrupts history. He had to try his best to rewrite his fate in the multiple whirlpools of assisting Emperor Hongwu, preserving his relationship with his twin sisters, and fighting against the conspiracies of time and space.
