The Wrath of Khan (1982)
With the assistance of the Enterprise crew, Admiral Kirk must stop an old nemesis, Khan Noonien Singh, from using the life-generating Genesis Device as the ultimate weapon.
A troubled child summons the courage to help a friendly alien escape Earth and return to his home world.
IN THE SMOG-CHOCKED DYSTOPIAN
Blade Runner Rick Deckard
is called out of retirement to terminate a quartet of replicants
who have escaped to Earth seeking their creator for a way to extend their short life spans.