Best sci-fi movie plot holes of all time

Please vote as you browse around to help the best rise to the top.

Plan 9 From Outer Space picture

Plot hole: When the flying saucer first appears, it is supposed to be 4 AM. But the grave diggers are still there from the burial of Bela Lugosi's wife.

More Plan 9 From Outer Space plot holes
28 Weeks Later picture

Plot hole: There is no way Don could have met his children at the underground station at the end of the film, with no way of knowing where they were going, and with no means of transport to get there that quickly.

More 28 Weeks Later plot holes
Journey to the Center of the Earth picture

Plot hole: We don't see any herbivores in the underground world - just fish and little birds. A T-Rex would need lots of big game to survive.

Jacob La Cour

More Journey to the Center of the Earth plot holes
Justice League: The Flashpoint Paradox picture

Plot hole: After Reverse Flash saves Lois Lane and kills all the Amazons that were attacking her, he disappears, just before a group of resistance fighters shows up. They know that they didn't take out any of the Amazons, it's obvious that Lois didn't kill them, yet the resistance members show no concern as to who was responsible. The war involves three separate groups, the resistance, the Amazons and the Atlanteans, each of whom is equally hostile to the other two. As such, the resistance cannot assume that whoever killed the Amazons must be an ally and let their guard down, as it could easily have been an Atlantean force, who would make no distinction between the Amazons and the resistance and would attack them on sight. An experienced resistance team would not be so casual about the situation. (00:40:50)

Quantom X

More Justice League: The Flashpoint Paradox plot holes
Chopping Mall picture

Plot hole: In the whole film, between the robots and the teens an incredible amount of damage is done to the shopping centre, including smoke, fires and explosions. These things would all easily trigger fire alarms and a sprinkler system...yet the fire alarms never go off.

swordfish

More Chopping Mall plot holes
Pokémon Detective Pikachu picture

Plot hole: After Pikachu and Mewtwo begin falling down, Tim is suddenly on the ground in a matter of seconds, with little to no time to arrive there. There are multiple stairs, and he does not have any Pokémon to help him get down. He couldn't have gotten to the ground that fast.

More Pokémon Detective Pikachu plot holes
Army of the Dead picture

Plot hole: Unless Tanaka is lying, the fact that aircraft cannot fly INTO Las Vegas but can fly OUT of Las Vegas makes absolutely no sense. The whole point of a quarantine zone is to keep people INSIDE.

wizard_of_gore

More Army of the Dead plot holes
Synchronic picture

Plot hole: So when he travels through time whatever he has on him or with him or whatever he's holding goes back in time with him just like his dog or the wood. Now he's sitting on the rock drinking a beer and his friend is talking to him and all that's heard and seen is his beer bottle breaking on the rock when he disappears through time. Makes no sense for it to fall from his hand and break if he's in possession of it. The beer should've gone with him. (01:26:30 - 01:27:30)

More Synchronic plot holes
Demolition Man picture

Plot hole: Even if the 30 bus passengers that were already dead had been burned up in the explosion of the building their bodies would still have been autopsied after the fact, thus proving that Phoenix had killed them beforehand and vindicated Spartan.

jbrbbt

Upvote valid corrections to help move entries into the corrections section.

Suggested correction: Considering a building fell on the bodies it would be extremely hard to determine the actual cause of death. Phoenix also could have killed them in a way that doesn't easily show in an autopsy, like asphyxiation.

lionhead

True, but why would they take the word of a known murdering kingpin over a police officer that while may not do things by the book, has always been for the greater good? It just seems way too far fetched.

wb6vpm

The lack of soot and other ignition debris in the lungs and tracheas of the dead bodies would have immediately told the pathologists and coroners who examined the bodies that the hostages were dead before the building was destroyed by an explosion supposedly set off by John Spartan. It doesn't matter how badly mangled the bodies were - a tissue sample no bigger than your little finger would have told them everything they needed to know. John Spartan did not commit manslaughter.

More Demolition Man plot holes
The Road picture

Plot hole: Despite supposedly being deprived of food, neither of the main characters (nor most of the minor characters) seem to display any signs of malnutrition. They both have all of their visible teeth, their stomachs are not distended and they seem to have a large amount of energy to travel by foot over lengthy distances.

More The Road plot holes
Star Trek Into Darkness picture

Plot hole: During the warp-speed chase, the Vengeance literally blasts the Enterprise to pieces, and dozens if not scores of Enterprise crew members are killed and injured in the carnage. The medical crew, including Chief Medical Officer McCoy, should have been working feverishly on the wounded and dying for hours, at least. Instead, as Kirk asks Khan for help, the Sickbay is practically deserted, and McCoy is almost idly conducting blood experiments on a dead tribble. There's no sense of a catastrophic medical emergency whatsoever. It's as though the Sickbay sequence was shot for a different script in which there was no emergency, and then lazily inserted into a rewritten script.

Charles Austin Miller

More Star Trek Into Darkness plot holes
The Meg picture

Plot hole: The movie establishes the narrative that megalodons have been locked beneath a layer of hydrogen-sulfide and that the first sub to penetrate that layer is their own research sub, thus allowing the megalodon to escape the hydrogen-sulfide layer for the first time in modern history. So, how could there be a megalodon present to at the very beginning of the movie, which interfered with the protagonist's rescue efforts?

More The Meg plot holes
The Toxic Avenger Part III picture

Plot hole: If the Devil made Claire blind again, how did she read the fine print of the devils contract with Toxie saying that there was an escape pod?

More The Toxic Avenger Part III plot holes
D.A.R.Y.L. picture

Plot hole: If the government guys could see Daryl in the cockpit, they should have known they could finish him off. If they launched a missile, he would either be hit by it or cook himself himself trying to outrun or outclimb it.

Grumpy Scot

More D.A.R.Y.L. plot holes
The Lost World picture

Plot hole: In the arial shot of the plateau, it's obvious its just a mesa. It's not at all large enough to support such big animals like those dinosaurs, who would have to eat great amounts of food. All small animals would be hunted into extinction, and all of the trees would have been cleared out long ago. Plus, there would be no place for the dinosaurs to hide, so the team should have seen the monsters right away.

More The Lost World plot holes
Mimic picture

Plot hole: Susan theorises that the insects have evolved to resemble people because of predatory pressure. However, for this to be true people must have been killing them - apart from the handful of 'moles and junkies' (who were the prey, not the killers) this film shows the first contact between humans and the evolved 'Judas bug'.

jle

More Mimic plot holes
Quatermass and the Pit picture

Plot hole: When Quatermass is being admonished by the senior minister for talking to the press, Breen gives his own theory to explain the presence of the spaceship: He says that it was used a propaganda weapon in 1944 and that the figures inside were made up of scraps old skin and bone, why was he unable to explain how the hull of the spaceship was heat resistant up to 3,000 degrees and harder than diamond?

Will

More Quatermass and the Pit plot holes
Hobgoblins picture

Plot hole: After Dennis (the first guard assistant) gets killed, the vault is open for several minutes before the old guard arrives. The hobgoblins, however, do not run for their freedom, but patiently wait until the hero, Kevin, comes in a later scene and opens the door. Then they escape as quickly as they can.

Twotall

More Hobgoblins plot holes
Species II picture

Plot hole: The rape scene in the parking lot... there is no one around for THAT long? But wait, once the detectives come in the scene two people are walking in the background with a shopping cart - they must have seen something!

More Species II plot holes
Mars Attacks! picture

Plot hole: If the president thinks it's so important that the Martians comes to the Congress to present their excuses, why didn't they bring the translating machine? (00:52:35)

Dr Wilson

Upvote valid corrections to help move entries into the corrections section.

Suggested correction: Because, as has been demonstrated, the "translating" machine is about as much use as t*ts on a tomcat.

More Mars Attacks! plot holes