Emily is a caring soul who pretends to be her ill sister so she can pursue her musical dreams. When she's the one who mistakes the identity of the Crown Prince of Ferrara for a talent scout, she's whisked away into a world of royal machinations. Prince Alessandro needs a wife so he can allow his elderly father to abdicate the throne and enjoy his later years, and Emily needs her sister to get the best medical treatment possible. Will the pair come together purely for business, or will they find passion in each other's arms?