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.

Faye attempts to replace her newly deceased husband, Evan, with an android simulant (SIM). Although SIM Evan appears like human Evan in every way, Faye does not feel the same love for SIM Evan as it does for her. SIM Evan tries to win Faye back while at the same time being on-the-run from a government agent chasing down SIMs who have become “conscious” and could potentially be a threat to humankind.