A poor girl becomes a “princess” overnight! To pay off her debts, salesgirl Lily agrees to impersonate CEO William’s long-lost sister to comfort his dying grandpa. Through a dramatic makeover, the ugly duckling transforms into a graceful swan. But as Lily and her “brother” William fall for each other, their forbidden love is torn apart by their fake sibling bond. Just when the grandpa arranges Lily’s marriage to another man, William realizes his true feelings—can he win her back before it’s too late?
