Bai Zhaozhao, a seven-tailed red fox of Qingqiu, is forced to accept a political marriage and will be sent to the brutal merman. To escape her fate, she and her mother Song Qingzhi heavily injured escape, by chance encountering the Dragon King and Dragon Prince Li Jiuyuan, and are taken back to the dragon palace to heal. That night, Bai Zhaozhao and Li Jiuyuan unexpectedly connect and secretly conceive a child, she mistakenly believing the other only wants an heir, not knowing Li Jiuyuan has secretly loved her for many years. The two accompany each other from dawn to dusk, their affection growing deeper, finally becoming a wedded couple. Meanwhile, the ten-thousand-year single Dragon King and Song Qingzhi untie a millennium misunderstanding, reunite, and both pairs of lovers achieve a happy ending.