Gary Smith (Domhnall Gleeson), a programmer who works for a well-known search engine company, is lucky enough to win the grand prize awarded by his boss Nathan (Oscar Isaac). He will be invited to spend a vacation with his boss in a villa located in the mountains. In the isolated villa, Nathan warmly received the employee. In fact, he invited Gali to come with another purpose, which is to help him complete the testing of the intelligent robot he developed. The genius Nathan developed Eva (Alicia Vikander), an intelligent robot with the ability to think independently. In order to confirm whether she has the ability to think independently, he hopes that Gali can conduct the famous "Turing test" for Eva. It seems that from the first glance, Gali was attracted by this robot with a beautiful face like a human. In the ensuing exchange, what he faced did not seem to be a cold machine, but more like a poor girl who had been imprisoned innocently...