As the last true dragon descendant, the heroine owns the only bloodline that can bear the Dragon King’s heir and defeat the evil Ice King. However, her lookalike elder legitimate sister steals her identity, marries the Dragon King and becomes the Dragon Queen, and kills their birth mother to hide the truth. Bound by ancient divine rules, only genuine dragon blood can endure the Dragon King’s blood and conceive dragon babies. The fake queen undergoes three heartbreaking miscarriages, facing fierce opposition from court ministers. With the cruel Ice King about to invade the dragon realm, the cornered fake queen has no choice but to secretly ask the real dragon-blooded heroine to take her place to sleep with the Dragon King and give birth to a savior dragon prince. Nevertheless, this seemingly desperate deal is exactly the heroine’s well-laid revenge trap. She decides to step into the dragon palace, avenge her mother, take back her stolen identity, and punish the ruthless imposter.
