In the beast world of Alma Continent, Princess Evelyn was deceived and enchanted by her illegitimate elder sister Meg in her past life. She devoted all her magical power to help the noble Lucian awaken his beast king strength, only to be brutally murdered by the two in collusion. At her last breath, only Ron, her captain of the guards, fought desperately to protect her, letting Evelyn finally see who truly loved her.Reborn to the groom-selection garland ceremony, Evelyn refuses the ambitious Lucian without hesitation and publicly chooses Ron, the lowly guard, shocking the entire crowd. Enraged and humiliated, Lucian plots to eliminate Ron in the martial arts tournament.Evelyn uses her unique healing and nurturing magic to awaken Ron’s dormant ancient dragon bloodline. Ron unleashes terrifying primeval dragon power and easily defeats Lucian.Unwilling to accept failure, Lucian allies with the desire-driven Meg. Using bewitching magic, they win over a group of nobles, launch a rebellion, and lay siege to the sky castle.In the critical moment, Ron fully transforms into an ancient black dragon. Riding atop the giant dragon, Evelyn charges into the battlefield and crushes the rebel forces completely. In the end, Lucian and Meg are stripped of all status and exiled to the barren northern border. Evelyn and the loyal dragon descendant Ron embrace their happy ending at last.