An alien and a robot land on Earth after World War II and tell mankind to be peaceful or face destruction.
Star Trek: Insurrection
1998
Stowaway
2021
Finch
The Arrival
1996
I Am Mother
2019
Automata
2014
Terminator Genisys
2015
Moon
2009
Close Encounters of the Third Kind
1977
Star Trek II: The Wrath of Khan
1982
Arrival
2016
Star Trek VI: The Undiscovered Country
1991