Noble-born Isolde is cursed by her step-mother Liana, turning fat and hideous. She is forced into a political marriage with powerful Duke Cecil. On their wedding night, her stepsister Sera slips a love potion, leaving Cecil severely injured in his legs. Misunderstood, Isolde is exiled to the countryside. The curse accidentally breaks; she regains her stunning beauty and star-mark bloodline magic, giving birth to quintuplets. Hiding her real identity as a maid inside the ducal castle, she evades exposure and fights Sera’s schemes. All misunderstandings are resolved, the villains get punished. They gather the Stellar-Tide Core and reunite as a whole happy family.
