The Birthday Party - Official Trailer (2026) Willem Dafoe

The story is set in the late 1970s somewhere in the Mediterranean, where Marcos Timoleon, an Aristotle Onassis-like tycoon, is throwing a lavish, extravagant birthday party for Sofia, his daughter and sole heiress, on his exclusive private island. The party is a perfect excuse for various people in his life to approach him with their own agendas. But Marcos, who is used to ruthlessly controlling everything and everyone around him at whatever cost, is also secretly plotting a big decision on his daughter’s behalf. Sofia, however, has come to share some important news of her own. As guests start pouring in and night falls, the party grows rowdier and more decadent, while the inevitable clash between Marcos and Sofia reaches a heartbreaking climax.