Ao Xun, the Dragon Prince, must undergo three months of trials in the human world to inherit the throne. Fu Shuangshuang, a novice in cultivation, is assigned as his personal assistant to help him complete various challenges and trials. The clash between the aloof prince and the proud, adorable girl sparks something between them, and they gradually fall in love. But humans and dragons are different, and that line must not be crossed.
A century ago, a faction lost the Dragon Clan's internal struggle and fled to the underground palace of Mount Wuwang. Ao Yi, the young master of the underground palace, has spent a hundred years building up his strength. Now he can stand against the Dragon Palace, and has repeatedly put Ao Xun and Fu Shuangshuang in danger.
To win over the Heavenly Palace and oppose Mount Wuwang, Ao Xun cuts short his trial in the human world and returns to the Dragon Palace to marry Jing Xia, a fairy of the Ninth Heaven. But on their wedding night, instead of taking the Heavenly Palace's fairy bride, the Dragon Prince secretly enjoys himself with a shapeshifter who looks exactly like the human girl. Feeling deeply humiliated, the bride searches everywhere and takes out all her anger on Fu Shuangshuang, the human girl.
Faced with outside enemies and his forbidden feelings, the Dragon Prince Ao Xun makes a shocking move... He will defy the laws that have governed the world for millions of years.
