Best Free Sci-Fi Movie Scripts Online (with PDF Downloads)

Written By: Stanley Kubrick & Arthur C. Clarke

Synopsis: After discovering a mysterious artifact buried beneath the Lunar surface, mankind sets off on a quest to find its origins with help from intelligent supercomputer H.A.L. 9000.

Written By: James Gray & Ethan Gross

Synopsis: Astronaut Roy McBride undertakes a mission across an unforgiving solar system to uncover the truth about his missing father and his doomed expedition that now, 30 years later, threatens the universe.

Written By: Dan O'Bannon

Synopsis: After a space merchant vessel receives an unknown transmission as a distress call, one of the crew is attacked by a mysterious life form and they soon realize that its life cycle has merely begun.

Written By: Eric Heisserer (screenplay), based on the novel by Ted Chiang 

Synopsis: A linguist works with the military to communicate with alien lifeforms after twelve mysterious spacecraft appear around the world.

Written By: James Cameron 

Synopsis: A paraplegic Marine dispatched to the moon Pandora on a unique mission becomes torn between following his orders and protecting the world he feels is his home.

Written By: Joss Whedon

Synopsis: Earth's mightiest heroes must come together and learn to fight as a team if they are going to stop the mischievous Loki and his alien army from enslaving humanity.

Written By: Christopher Markus & Stephen McFeely

Synopsis: After the devastating events of Avengers: Infinity War, the universe is in ruins. With the help of remaining allies, the Avengers assemble once more in order to reverse Thanos' actions and restore balance to the universe.

Written By: Robert Zemeckis & Bob Gale

Synopsis: Marty McFly, a 17-year-old high school student, is accidentally sent thirty years into the past in a time-traveling DeLorean invented by his close friend, the eccentric scientist Doc Brown.

Written By: Ryan Coogler & Joe Robert Cole (screenplay), based on the comics by Stan Lee & Jack Kirby

Synopsis: T'Challa, heir to the hidden but advanced kingdom of Wakanda, must step forward to lead his people into a new future and must confront a challenger from his country's past.

Written By: Hampton Fancher & David Webb Peoples (screenplay), based on the novel by Philip K. Dick 

Synopsis: A blade runner must pursue and terminate four replicants who stole a ship in space, and have returned to Earth to find their creator.

Written By: Hampton Fancher & Michael Green (screenplay), based on the novel by Philip K. Dick 

Synopsis: Young Blade Runner K's discovery of a long-buried secret leads him to track down former Blade Runner Rick Deckard, who's been missing for thirty years.

Written By: Richard Kelly 

Synopsis: After narrowly escaping a bizarre accident, a troubled teenager is plagued by visions of a man in a large rabbit suit who manipulates him to commit a series of crimes.

Written By: Alex Garland (screenplay), based on the characters by John Wagner & Carlos Ezquerra

Synopsis: In a violent, futuristic city where the police have the authority to act as judge, jury and executioner, a cop teams with a trainee to take down a gang that deals the reality-altering drug, SLO-MO.

Written By: Charlie Kaufman

Synopsis: When their relationship turns sour, a couple undergoes a medical procedure to have each other erased from their memories.

Written By: Alex Garland

Synopsis: A young programmer is selected to participate in a ground-breaking experiment in synthetic intelligence by evaluating the human qualities of a highly advanced humanoid A.I.

Written By: Dan Kwan & Daniel Scheinert

Synopsis: An aging Chinese immigrant is swept up in an insane adventure, in which she alone can save the world by exploring other universes connecting with the lives she could have led.

Written By: Charles Edward Pogue & David Cronenberg (screenplay), based on the short story by George Langelaan 

Synopsis: A brilliant but eccentric scientist begins to transform into a giant man/fly hybrid after one of his experiments goes horribly wrong.

Written By: Luc Besson & Robert Mark Kamen 

Synopsis: In the colorful future, a cab driver unwittingly becomes the central figure in the search for a legendary cosmic weapon to keep Evil and Mr. Zorg at bay.

Written By: Dan Aykroyd & Harold Ramis

Synopsis: Three former parapsychology professors set up shop as a unique ghost removal service.

Written By: Alfonso Cuarón & Jonás Cuarón

Synopsis: Two astronauts work together to survive after an accident leaves them stranded in space.

Written By: James Gunn

Synopsis: The Guardians struggle to keep together as a team while dealing with their personal family issues, notably Star-Lord's encounter with his father the ambitious celestial being Ego.

Written By: Spike Jonze

Synopsis: In a near future, a lonely writer develops an unlikely relationship with an operating system designed to meet his every need.

Written By: Christopher Nolan

Synopsis: A thief who steals corporate secrets through the use of dream-sharing technology is given the inverse task of planting an idea into the mind of a C.E.O.

Written By: Mark Furgus & Hawk Otsby & Art Marcum & Matt Holloway

Synopsis: After being held captive in an Afghan cave, billionaire engineer Tony Stark creates a unique weaponized suit of armor to fight evil.

Written By: Jonathan Nolan & Christopher Nolan

Synopsis: A team of explorers travel through a wormhole in space in an attempt to ensure humanity's survival.

Written By: Michael Crichton & David Koepp (screenplay), based on the novel by Michael Crichton

Synopsis: A pragmatic paleontologist visiting an almost complete theme park is tasked with protecting a couple of kids after a power failure causes the park's cloned dinosaurs to run loose.

Written By: Scott Frank and James Mangold & Michael Green

Synopsis: In a future where mutants are nearly extinct, an elderly and weary Logan leads a quiet life. But when Laura, a mutant child pursued by scientists, comes to him for help, he must get her to safety.

Written By: Drew Goddard (screenplay), based on the novel by Andy Weir

Synopsis: An astronaut becomes stranded on Mars after his team assume him dead, and must rely on his ingenuity to find a way to signal to Earth that he is alive.

Written By: Lana Wachowski & Lilly Wachowski

Synopsis: A computer hacker learns from mysterious rebels about the true nature of his reality and his role in the war against its controllers.

Written By: John A. Russo & George A. Romero

Synopsis: A ragtag group of Pennsylvanians barricade themselves in an old farmhouse to remain safe from a horde of flesh-eating ghouls that are ravaging the East Coast of the United States.

Written By: Eric Roth & Brian Helgeland (screenplay), based on the novel by David Brin 

Synopsis: A nameless drifter dons a postman's uniform and bag of mail as he begins a quest to inspire hope to the survivors living in post-apocalyptic America.

Written By: Fred Dekker & Shane Black (screenplay), based on the characters by Jim Thomas & John Thomas 

Synopsis: When a young boy accidentally triggers the universe's most lethal hunters' return to Earth, only a ragtag crew of ex-soldiers and a disgruntled scientist can prevent the end of the human race.

Written By: Bryan Woods and Scott Beck & John Krasinski

Synopsis: In a post-apocalyptic world, a family is forced to live in silence while hiding from monsters with ultra-sensitive hearing.

Written By: George Lucas

Synopsis: Luke Skywalker joins forces with a Jedi Knight, a cocky pilot, a Wookiee and two droids to save the galaxy from the Empire's world-destroying battle station, while also attempting to rescue Princess Leia from the mysterious Darth Vader.

Written By: Leigh Brackett and Lawrence Kasdan & George Lucas

Synopsis: After the Rebels are brutally overpowered by the Empire on the ice planet Hoth, Luke Skywalker begins Jedi training with Yoda, while his friends are pursued by Darth Vader and a bounty hunter named Boba Fett all over the galaxy.

Written By: Lawrence Kasdan and J.J. Abrams & Michael Arndt

Synopsis: As a new threat to the galaxy rises, Rey, a desert scavenger, and Finn, an ex-stormtrooper, must join Han Solo and Chewbacca to search for the one hope of restoring peace.

Written By: George Lucas

Synopsis: Two Jedi escape a hostile blockade to find allies and come across a young boy who may bring balance to the Force, but the long dormant Sith resurface to claim their old glory.

Written By: George Lucas

Synopsis: Three years into the Clone Wars, the Jedi rescue Palpatine from Count Dooku. As Obi-Wan pursues a new threat, Anakin acts as a double agent between the Jedi Council and Palpatine and is lured into a sinister plan to rule the galaxy.

Written By: Matt Duffer & Ross Duffer 

Synopsis: When a young boy disappears, his mother, a police chief and his friends must confront terrifying supernatural forces in order to get him back.

Written By: James Cameron & William Wisher 

Synopsis: A human soldier is sent from 2029 to 1984 to stop an almost indestructible cyborg killing machine, sent from the same year, which has been programmed to execute a young woman whose unborn son is the key to humanity's future salvation.

Written By: James Cameron & William Wisher

Synopsis: A cyborg, identical to the one who failed to kill Sarah Connor, must now protect her teenage son, John Connor, from a more advanced and powerful cyborg.

Written By: Eric Pearson and Craig Kyle & Christopher L. Yost 

Synopsis: Imprisoned on the planet Sakaar, Thor must race against time to return to Asgard and stop Ragnarök, the destruction of his world, at the hands of the powerful and ruthless villain Hela.

Written By: Andrew Niccol 

Synopsis: An insurance salesman discovers his whole life is actually a reality TV show.

Written By: Mark Bomback & Matt Reeves (screenplay), based on the characters by Rick Jaffa & Amanda Silver 

Synopsis: After the apes suffer unimaginable losses, Caesar wrestles with his darker instincts and begins his own mythic quest to avenge his kind.

Written By: Simon Pegg & Edgar Wright 

Synopsis: Five friends who reunite in an attempt to top their epic pub crawl from twenty years earlier unwittingly become humanity's only hope for survival.