It tells the story of Chi Yu, a Phoenix Divine Beast of the Scarlet Flame Clan who has locked away his heart and love. He encounters Mu Lingxue, a mortal girl whose family has been destroyed by treachery. On a night of the full moon, the two form a bond between human and beast, sealing a twin-soul contract. Through hardship and struggle they grow together. In the end, they eradicate traitors and save all living beings.