The survivors of an alien invasion come up with a way to tell whether someone is really a fellow human. In a post-apocalyptic world, Key and Peele lead a group of human survivors who have developed a unique method to identify aliens disguised as humans: using racial stereotypes, cultural references, and social dynamics that the aliens cannot comprehend or replicate. The sketch humorously explores themes of race relations and cultural identity while showcasing how these human social constructs become a survival mechanism against extraterrestrial imposters.