Four friends, Sophie, Ben, Jeni and David, are on a vacation in Irish countryside, where they encounter a gold-lusting monster who wants to take their lives.
Origins has the examples of:
- Accidental Murder: The "leprechaun" tricks Sophie and Ben into killing Jeni.
- Calling the Old Man Out: Having had enough of the senseless sacrifices, Sean finally turns on his father to buy Sophie enough time to escape.
- "Could Have Avoided This!" Plot: If the villager haven't found the gold in the cave and got greedy then they wouldn't have to deal with the "leprechauns." Also if had just either gave the gold back, not do these selfish senseless sacrifices or left the village trapping the monsters there then they would haven't been facing these problems. Sean pointed these facts out.
- Darker and Edgier: The film goes in this direction, as the "leprechaun" is a hideous monster that doesn't speak at all, let alone bother with jokes.
- Final Girl: Sophie becomes one after all her friends are killed.
- Greed: Like the other Leprechaun films, the villagers' motivation is greed. They refused to return the gold back to the leprechauns so they decided to sacrifice innocent people as exchange and keep the gold.
- Heroic Sacrifice: David does this in order to help the others escape from the "leprechaun".
- Impaled with Extreme Prejudice: Ian is impaled on some farm equipment.
- In Name Only: Origins shares very little in common with the original films (including a leprechaun at all; it's really some kind of lizard monster that never speaks).
- Mythology Gag: Before decapitating the "leprechaun", Sophie says "Fuck you, Lucky Charms", which was also said in the original 1993 film before the Leprechaun was defeated.
- No Good Deed Goes Unpunished: Even though Sean can't bring himself to sacrifice the four and even saves Sophie from his father Hamish, he is left devastated when the "leprechaun" kills the latter.
- Off with His Head!: How the "leprechaun" dies.
- Only Sane Man: Sean. While his father thinks the best solution to their problems is to feed the creature unsuspecting tourists, Sean firmly believes they're all better off just leaving their village.
- Sadly Mythtaken: The "leprechaun" featured in the film resembles nothing like any iteration of the titular fairy of myth, the closest it ever comes being its involvement with gold. The film tries getting around this by portraying it as a member of the Tuatha Dé Danann, but even then the Tuatha Dé Danann were usually portrayed as benevolent.
- Token Good Teammate: Sean. He is the only member of his village who hates the fact that he is forced to participate in the unjust sacrifice of tourists and even helps the four escape twice.
- The Voiceless: The "leprechaun" does not speak, but rather snarls and growls like a feral animal.
- Well-Intentioned Extremist: Hamish and the rest of their village. They simply want to keep themselves safe from the creature's wrath. Only problem is, their solution involves tricking and sacrificing innocent tourists.