Caleb, a 24 year old coder at the world's largest internet company, wins a competition to spend a week at a retreat belonging to the company's reclusive CEO, Nathan. But when Caleb arrives he finds that he will have to participate in a fascinating experiment with the world's first true artificial intelligence, housed in the body of a beautiful robot woman, Ava. Truths, emotions and motives are blurred as the relationship between Caleb, Ava and Nathan intensifies.