The movie "immigrant planet"

Artificial Intelligence is a futuristic sci-fi epic film, produced by Spielberg. The film tells the story of 265438+ In the middle of the 20th century, many cities on the earth were submerged in a piece of Wang Yang due to the warming of the climate and the melting of the polar ice sheets. At this time, human science and technology have reached a very high level, and artificial intelligence robot is one of the scientific and technological means invented by human beings to cope with the harsh natural environment.

Those you see are not aliens, but artificial intelligence after the death of mankind.