On a private Greek island in the late 1970s, a shipping tycoon modeled after Aristotle Onassis throws his daughter and sole heiress a lavish 25th birthday party. As guests arrive with their own agendas and his daughter prepares to share news of her own, the celebration escalates into decadence and unease, in a story about wealth, power, inheritance, and the collision between a father and the future he tried to control.