When Elizabeth Magnus, hailing from a financially struggling noble family, is unexpectedly abducted by a charming yet exasperating stranger, Duke Sylvestor, her world takes a twist. Mistaken for his missing party-loving sister, also named Elizabeth, she is coerced into impersonating her for six months. In return, Sylvestor promises to aid her family financially. Thus commences Elizabeth Magnus' journey masquerading as Elizabeth O'Brien, a noble's daughter.