Extremely shy Lars finds it impossible to make friends or socialize. His brother and sister-in-law worry about him, so when he announces that he has a girlfriend he met on the Internet, they are overjoyed. But Lars' new lady is a life-size plastic woman. On the advice of a doctor, his family and the rest of the community go along with his delusion.

Caleb, a coder at the world's largest internet company, wins a competition to spend a week at a private mountain retreat belonging to Nathan, the reclusive CEO of the company. But when Caleb arrives at the remote location he finds that he will have to participate in a strange and fascinating experiment in which he must interact with the world's first true artificial intelligence, housed in the body of a beautiful robot girl.