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