After winning a competition to spend a week at the mountain estate of his company's brilliant CEO (Oscar Isaac), programmer Caleb Smith (Domhnall Gleeson) arrives to discover he has been chosen to take part in a study of artificial intelligence. Sworn to secrecy and cut off from the outside world, Caleb meets his subject, a beguiling and seductive cyborg named Ava (Alicia Vikander) — and is plunged into an A.I. experiment beyond his wildest imaginings in this epic thriller charged with heart-stopping suspense.