Close_Encounters_of_the_Third_Kind made almost 16 times what it cost to make, so it was quite a very successful movie as well as being such an entertaining Sci-Fi story. https://www.imdb.com/title/tt0075860
https://en.wikipedia.org/wiki/Close_Encounters_of_the_Third_Kind#Plot
https://en.wikipedia.org/wiki/Close_Encounters_of_the_Third_Kind#Filming
"The aliens reveal themselves and select a group of humans to bring with them on their travels." https://www.youtube.com/watch?v=d-IJsG4z2lg , https://www.youtube.com/c/VoyageOfficialChannel/videos
In CE of the 3rd K, its not indicated if their ship is simply from another part of the universe or from another dimensional plane of existence. While at the end of Indiana_Jones_and_the_Kingdom_of_the_Crystal_Skull, the ET beings open a portal into another dimension and vanish. https://en.wikipedia.org/wiki/Indiana_Jones_and_the_Kingdom_of_the_Crystal_Skull#Plot
https://www.imdb.com/title/tt0367882
Of course the ET Hypothesis has become a common theme in several movies.
