The daughter of a declining count's family, Laura, is forced to break off her engagement because she can no longer afford the dowry. As she desperately searches for a new marriage to save her family, an unexpected offer arrives from the royal castle: a position as the first prince's official mistress. She accepts the offer, hoping to secure her family's future with money and an heir. However, upon arriving at the castle, she's shocked to be reunited with her cold and distant ex-fiancé, Eric, and finds herself caught in a love web involving her and three other princes. Will she navigate the treacherous royal court and find a way to save her family?