The hairdresser Emily Woodrow finds a fortune in golden coins and she shares the amount with her close friends. However, the owner is the evil Leprechaun that returns from Hell to retrieve his treasure back, killing each member of the greedy group.

Darby O'Gill seems to be as full of blarney as any old codger in Ireland, but the stories of leprechauns he tells at the pub are true. In fact, he and the tiny King Brian, ruler of the little people, are friendly adversaries, continually out-foxing each other. Darby needs a bit of magical help from the wily king when Lord Fitzpatrick replaces him as caretaker with the handsome, strapping young Michael from Dublin. Michael falls in love with Darby's beautiful daughter, Katie, which is all right with Darby; but the lad has a rival in a local ruffian, the son of a devious widow who wants her boy to be the caretaker. King Brian's supernatural assistance is necessary to make everything come out all right, but the sneaky leprechaun won't play matchmaker without a fight. Finally, real trouble comes in the form of the Banshee, and Darby will need all his quick wits to save his daughter from the wicked spirit.

American businessman Jack Woods rents a cottage on the enchanted Emerald Isle which is occupied by a family of leprechauns. Leprechaun Seamus Muldoon's son and son's friends crash the fairies' costume ball and Muldoon's son falls in love with fairy Princess Jessica. Their love re-ignites a feud between the leprechauns and the fairies, which escalates into a war. The Grand Banshee warns of terrible consequences and Jack Woods is chosen to make peace. Woods interrupts his own romance with an Irish beauty to help, and becomes involved in a strange and wonderful magical adventure.

It was a normal night in Las Vegas, Nevada, all the lights were flashing brightly, until a man with one hand, one eye, and one leg walks into a pawn shop with a statue of a hideous looking Leprechaun. The owner claims it's a good luck charm. The statue also wore a medallion around it's neck. The careless pawn shop owner took off the medallion setting the Leprechaun free, along with his pot of gold that everyone wants and like before, he'll kill anyone who goes near it. Driving into town that night was a young man named Scott who was off to L.A. to go to school. Along the way he meets a sarcastic, but friendly, girl named Tammy. Scott tries gambling but loses everything, so he goes to the pawn shop to pawn his Rolex watch. At the shop, he finds the dead owner and one of Leprechaun's gold coins that grants a wish to its finder. Scott wishes for a winning streak, but what he does not know is that the casino is run by a crooked man who hates to lose...

He's been in the country side, he's been downtown, he's been to Las Vegas, he's even been in space, now that evil Leprechaun is in DA HOOD! Three young rap artists are looking for a break. They need money to buy some music equipment so they can go to Las Vegas and enter a contest. They meet up with a local pimp named Mack Daddy who agrees to "hook them up", but later declines. The rappers want to get even with him so one night they break into Mack's place and steal a lot of his jewelry, gold, and even the medallion from an ugly looking statue. Shouldn't have done that! Because without the medallion, the statue transforms into the Leprechaun, who goes on a killing spree looking for his missing gold, once again! And the song says it all, "there's nothing' scarier than a Lep' in the hood!"