Leo and Emily have been dating for quite some time when he proposes, and during his proposal, he confesses that he is actually Prince Leopold, Duke of Winterstone, and heir to the throne of a sovereign state bordering Switzerland. Leo's mother (Isadora, the Queen) finds out that he has proposed to an American commoner (without her blessing) and becomes outraged. In a series of events, she sabotages their courtship and does everything in her power to drive the couple apart. But will she succeed?