Caleb, a gifted coder at the world's leading tech company, wins an exclusive retreat at the secluded mountain estate of Nathan, the company's enigmatic CEO. But upon arrival, Caleb learns he's been selected for a groundbreaking experiment—to engage with Ava, a breathtakingly advanced AI housed in the form of a strikingly human robot. As their interactions deepen, Caleb begins to question the true nature of the test, the intentions of his reclusive host, and whether Ava is as confined as she seems—or if she has plans of her own.