Lincoln (Ewan McGregor) and Jordan (Scarlett Johansson) think they live in an isolated community. According to scientists, they are the last surviving humans on earth. In their group, candidates will be drawn by lot and sent to live on a small island in a secluded paradise. However, before they were selected, they had to endure a life without freedom and supervision. When Lincoln and Jordan were "lucky" to be elected, they discovered a surprising secret-the so-called Xanadu Island did not exist at all, and they themselves were just cloned versions of the island's residents; they went to the island and welcomed it not Beautiful life, but taking out their living organs to save mankind. Lincoln witnessed with his own eyes how his friend was dissected under the scalpel. So, Lincoln resolutely decided to embark on the road of escape with his girlfriend Jordan...