A displaced duke living on a remote island uses magic and spirit-servants to engineer a shipwreck that brings his rivals and the young heir of a kingdom into his power. His daughter and the prince form a gentle attachment while plotting courtiers, comic drunks, and a resentful island native complicate events. Enchantments, staged visions, and confrontations reveal past betrayals and test loyalties, leading the ruler to pursue reconciliation and the restoration of order. The drama examines authority, forgiveness, illusion versus reality, and the ethical costs of vengeance amid colonial encounters and theatrical spectacle.