Note: I'm not a jurist, just a regular guy who happen to have not so bad knowledge regarding this kind of laws.
He could also make a parody of the movie which, under US copyright law, is an affirmative defence.
But for this to apply, he must be an US citizen, or the movie must fall under US Laws. Yet, he would be safe only if the two are true. Else, he could be sued by the right owner(s) on his country if he's not US citizen, or sued on the country where the movie was made if it's not the USA. In both case, the US parody laws wouldn't apply. Be noted that on the second case, there chance that the sentence stay a simple annoyance, since the Justice of his country will not necessarily decide to apply the decision.
Also be noted that this obviously doesn't mean that the USA is the sole country with such laws. It's just that in terms of law application, the context is really important and it should be seen in its whole.
Lastly a lot of movies are based on an underlying work that is in the public domain (i.e. no longer under copyright) Think Shakespeare, H.G. Wells (depending on where you live), Jules Verne, the Iliad and many more.
It don't depend on where you live, but on where the rights have been registered.
Be also noted that all countries don't apply copyright (or corresponding in the country) in the same way. In the UK, among others countries, the rights will stand until between 50 and 70 years after the death of the author. But it's the USA the copyright stand for 90 years after the first publication date.
Therefore, knowing where the rights have been registered is important not only to know how long they apply, but also to know when you need to start counting. Take H.G. Wells "The Time Machine" by example. Published for the first time in 1895, under US laws it would have fallen in public domain in 1985 (in fact before this date, since at this time the rights were granted for less than 90 years). But since he died in 1946, under UK laws it's in public domain since between 1996 (50 years) and 2016 (70 years).
Plus, it's not just the story that is protected ; or more precisely all stories are protected independently, even when they are a derivative adaptation from another one. Most of H.G. Wells books have had numerous movies, all presenting the story in their own way, all being protected independently of the book's story. Therefore, it's legal to use the story as in the book, and even adapt it. But it's not legal to use, even if adapted, the story as in one of the movies ; unless this story is itself now in public domain.
By example, you can adapt Jules Verne's "From the Earth to the Moon" story, as in the book or as in George Méliès' "A Trip to the Moon" movie ; both are registered in France, that have a 70 years after the death protection (Méliès movies are in public domain since 2008). But you can't adapt your story from the Warner Brothers' 1958 movie, because of the 90 years after first publication rights in the USA.
This mean that you've to be careful. Your freedom to adapt the story will be limited by what others have done as adaptation. Of course, you can genuinely have came to the same variation than in a movie you never saw nor heard about. But you would be a insignificant indie author who face a movie studio. Even if you're lucky and finally recognized as none guilty, it would still be at the end of years of legal procedure during which your opponent would use all the possible moves to win.
Obviously, being an insignificant indie author also mean that you'll probably stay all your life under their radar. But you've to know that, as unlucky to happen as it is, it's still a possibility.