Jurassic Park: A new theme park runs into some technical difficulties.
Alien: A crew of truckers deal with a pest infestation.
LOTR: A short person walks a long way to destroy an magic ring.
Avengers 2: Age of Ultron: A security system does not work as expected.
How to dispose of unwanted jewelery.
King Kong: A clumsy country boy succumbs to the wiles of a sassy blonde and makes a large impact on the Big Apple.
Ender’s Game: Kids playing video games
Harry Potter: Children in boarding school
This is more fun if people have to guess the movie, but oh well…
2001: A space mission encounters computer difficulties and has to reboot while exploring the moons of Jupiter.
Gremlins: A child fails to pay attention to the care and feeding instructions for their pet and its offspring die.
Charlie and the Chocolate Factory: Today on How It’s Made: Candy.
Worth a look. (I’m the one pointing out that Steve Rogers is really just a troubled young man who takes some steroids and attacks some foreigners.)
The Martian: Man grows potatoes while waiting for his co-workers to return.
The Wizard of Oz: Girl gets caught in a tornado, has to walk a long way back home.
A popular teen is chased across the city with his friends by a merciless red headed authority figure.
Ferris Bueller’s Day Off
Deadpool: Man tries experimental cancer treatment.
Sure, you can do it that way. Whichever is funnier.
Apollo 13: Government employees fail to complete their project on schedule due to wiring issues
That’s way over the top. How about:
“girl gets caught in bad weather, has to walk a long way back home”
Guy on long flight has weird dreams.
Inception
A crate in Tosche Station sits unclaimed.
Star Wars.
Former cheerleader goes unpunished by parents for breaking curfew.
Buffy the Vampire Slayer
Political rivals disagree.
A Song of Ice and Fire
World War I soldier adopts new clothing choice, and makes new friends.
Lawrence of Arabia
There must be some good mundane summaries that fit very different works. Unfortunately my knowledge isn’t nearly encyclopedic enough to offer some.