Two magpies are looking for a nesting place. Nowhere is there a vacancy. Finally they rent a nest in a treetop just outside the bedroom window of an old man (Farmer Al Falfa). His sleep disturbed, he asks them to be a little quieter. Instead, the magpies squawk on relentlessly. Try as they might, those birds just can't stay quiet. Farmer Al Falfa starts after them with his gun. As he rounds the corner, one of the magpies has slipped into the radio and is broadcasting a show on "how to rid your farm of magpies." The farmer realizes that he has been tricked, and the hunt is on. The magpies trick him into a barrel and turn his own gun on him.
Farmer Al Falfa and his dog try to have a private picnic, but Heckle & Jeckle decide to freeload. The usual hijinks ensue as the farmer and his dog try to get rid of the magpies. Eventually, the farmer gives them a stick of dynamite disguised as a hot dog. As they try to roast it, the farmer drives away in his car to avoid the explosion, but Heckle & Jeckle throw the dynamite into their car.
Heckle & Jeckle along with other magpies decide to build a birdhouse on a quiet rest farm. But it's private property, and the magpies are ordered to move right out again by a watchdog. After several battles, the watchdog sees that he can't win. The watchdog eventually corners them with his shotgun, but he doesn't have the heart to shoot them. He joins up with them, saying that he's really not a watchdog, but a birddog. The watchdog ends up living with them in the birdhouse.
Heckle & Jeckle try to steal food from under the watchful eye of Dimwit the dog.
Heckle and Jeckle see a seemingly helpless baby bird (who keeps saying he is "only three years old") in danger as a cat is trying to capture it. The magpies play their usual tricks on the cat to keep him from getting the baby bird. When the cat starts shooting at the birds, the baby bird gets angry, marches straight towards the cat and gives him a sound thrashing, much to the amazement of Heckle and Jeckle.
Heckel and Jeckel fly over a country estate and decide it would do just fine as a nesting ground for them, especially since it afforded a few luxuries they could take advantage of. But the Bulldog guardian of the grounds thinks otherwise and makes his objections know. They object to his objections by attacking him with the croquet mallets, pushing him into the swimming pool and several other objectionable ways the talking magpies could come up with.
Heckel and Jeckle decide it is too much trouble and time-consuming, not to mention wear-and-tear on their wings, to fly south for the winter, so they will pose as orphans and find some kindly old grandmother to take care of them when the snow flies. They do. But the kindly old grandmother turns out to be a disguised-wolf who has an appetite for magpie soup. This is not at all what they had in mind.
Dimwit is going fishing. Heckle and Jeckel tag along. They sink his boat and steal his fish. No matter where Dimwit goes, they're trying to help.
Heckle and Jeckle, the talking Magpies, are running rampant and causing much havoc in a supermarket mush to the dismay of the proprietor.
Hitch-hikers Heckle and Jeckle manage to get a lift in a car that turns out to be a getaway vehicle for an armed robber.
When a housecat begins to eye Heckle and Jeckle, hijinks ensue.
When their motorcycle with a sidecar gets a flat tire in the middle of winter in the snowbound mountains, Heckle & Jeckle are forced to bed down for the winter in a cave... not realizing that a hibernating bear is inside the cave, too. Heckle and Jeckle ask for help from the bear, who is not interested in helping. So when they make a lot of noise trying to fix their flat, the bear comes out and destroys their motorcycle! BIG mistake! Now Heckle & Jeckle decide that they have to spend the winter in his place! In one scene, Heckle & Jeckle dress up in red Royal Canadian Mounted Police uniforms (complete with their famous hats) and raid the bear's fridge!
Heckle and Jeckle, the always-talking Magpies, kick this one off by stealing a bowl of bones from Soupbone, an old hound dog. Soupbone raises some objections that leads to a fracas or two, with all hands ending up in a nervous place, and the two birds trying to rescue Soupbone from a padded cell.
Heckle and Jeckle escape from prison and decide to take the train but have to get past Dimwit Dog who doesn't fall for their tricks.
Heckle & Jeckle sneak into a prison to sell drills, hacksaws and other tools to the inmates. The hound dog guard catches them and puts them in a cell. They trick the guard into shooting out the bars on their cell, and they escape by jumping into a truck full of coal. The truck then dumps the coal right back into the same prison.
Heckle and Jeckle have a hard time going to sleep in the golf course. They end up causing mayhem for the local golfer.
Heckle and Jeckle know something other animated toilers don't: they're cartoons. That means unlimited power, which they use to outwit a bulldog cop.
The talking magpies go to Africa to indulge in a bit of lion-hunting and, once there, they find a lion who has no desire to be hunted by two wise-cracking birds. Heckle almost meets his maker when Jeckle persuades him to serve as lion bait. The lion is deceived for a little while when they promise him a movie contract but the end finds the score about dead-even between the hunters and the huntee.
Heckle and Jeckle stow away on a plane and are chased by the captain.
Heckle and Jeckle, the talking magpies, take over a timid lion who is working as an auto mechanic in a garage, and play several mean tricks on him, as that is what they were created to do. An ill-tempered dog arrives in his autogyro (helicopter car)to have it overhauled, and H & J lock the lion in the fuselage. When the autogryist takes off, the lion burned-up lion goes with him.
The Talking Magpies, Heckle and Jackle, open a hot-dog concession stand in Hawaii. The first customer is a dumb dog who becomes the innocent victim of the merry, mischief-making magpies. Another dog, a tough one, is getting the same treatment but not for long.
Salesmen Heckle and Jeckle set up shop in a hotel lobby selling mechanical shoes - they do the walking for you - and the hotel detective, an irritable and irascible dog with no tolerance for talking magpies, especially those selling mechanical shoes, objects to their business location. H & J object to his objections. Mayhem follows.
Heckle & Jeckle become part of a televised fox hunt when the fox and his pursuer, Dimwit, burst through their TV screen.
The two magpies are wanted criminals, complete with "Wanted" posters being spread everywhere. They come across Dimwit and the tough Bulldog, and the pursuit is on!
Heckle & Jeckle in Egypt, inside King Tut's tomb, encounter all sorts of marvels
Heckel and Jeckel are in Mexico and selling real-hot hot-tamales at the bullfight arena. When their customers are burned up after eating the tamales, the arena manager tries to throw the talking-magpies out but, in attempting to escape the wrath of the manager, the find themselves trapped in the ring with a ferocious bull. The only recourse is to fight the bull, albeit in many unorthodox ways.
Heckyl and Jeckyl get their wish when they wish for no more rain forever. Then when a drought sets in they have to attempt to put things straight again.
The talking Magpies sell tickets and hot dogs to view a construction site.
Heckle and Jeckle of the Northwest Unmounted Police pursue the dreaded outlaw, Powerful Pierre.
Heckle and Jeckle, despite the animals falling in love all around, swear they won't. Of course, immediately after they say this, a pretty girl drops a hanky, and they fight over her. Jeckle hides in a gift box; Heckle nails Jeckle into a rocket, then mails him to Mexico. Jeckle returns with a bull. They both swear off dames, until, of course, another one walks by.
Time for the Opera! Heckle and Jeckle decide to go, and hijinks ensue.
The Talking Magpies, Heckle and Jeckle, are working as professional house-wreckers, and they run up against an escapee, wanted-criminal bulldog who is hiding out in a house they have been hired to demolish. Before the confusion and destruction that follows his discovery, the bulldog wishes he had stayed in jail.
Heckle and Jeckle, the world's most famous talking Magpies, go on a moose-hunting trip. In order to get close enough to a moose to shoot him, they combine themselves into a female(?) moose costume. But the disguise is too effective, the moose is soon in love, and it appears a union that will produce the worlds first Moosepie animal is in the offing.
The talking magpies, Heckle and Jeckle, crash a movie studio driving a papier-mache limousine, and have no problem eluding the studio watchdog by disguising themselves, at various times, as knights-in-armor, Romeo and Juliet and, then, a couple of penguins. After many defeats, the vigilant-but-dumb bulldog finally kicks them of the lot.
Dangerous Dan the desperado enters the barbershop run by Hackle and Jackle with guns blazing, and that is his highlight as the Magpies use their barber equipment to teach him a lesson and drive him crazy.
Heckle and Jeckle ruin the business of a body building instructor by peddling fitness pills that promise instant results.
Spike the bulldog's bowling game is preventing Heckle & Jeckle from getting any sleep. The two magpies head for the bowling alley next door to create problems for Spike. The duo put two lit bombs in Spike's pants. The bombs wreck the bowling alley and Spike...but the explosion destroys the magpies' home, too.
There's a big sale about to start at the store. To get there early, Heckle and Jeckle go to bed in the store's window. The manager orders his guard to throw them out, but they sell him a vacation to Hawaii.
Heckle and Jeckle, the talking magpies, are in need of upgraded-housing and decide to help themselves to the logs and lumber laying unused in Big Pierre's lumber yard. Big Pierre thinks this a bit high-handed on the part of the two birds, and his objections leads to several battles and mêlées, which leads to a big explosion which causes the logs to fall and form a house. But the house collapses, and Heckle and Jeckle shrug it off and depart the premises.
When a wealthy loner puts out an ad looking for his long-lost girlfriend, Heckle and Jeckle scheme to dress up as her in hopes of swindling him out of his money.
Heckle and Jeckle, the talking Magpies, are running rampant and causing much havoc in a supermarket mush to the dismay of the proprietor. Seveal wild chase ensue, with the store owner on the short end of most of them, until all three are caught inside of a giant soap bubble and carried skyward. The bubble bursts, and H & J are returned to the cartoonist's inkwell.
On the opening day of their new diner called the Indigestion Inn, Heckle & Jeckle's new business is threatened by two robbers (Spike, Dimwit). The boys foil the crooks with their utensils and some pepper.
Heckle and Jeckle set up camp on the lawn of a swank Miami Beach hotel, raise havoc hither and yon and all about. All efforts and methods use by the hotel management result in total failure, until...
In this Terrytoon, Heckle and Jeckle, the talking magpies, tangle with a pirate who has a treasure map, and after much finagling and talk, they are able to get the map and the treasure, only to find that an agent for the Iternal Revenue Service is waiting to collect the unpaid back taxes.
Dimwit travels on safari hoping to get footage of the animals. When Heckle and Jeckle hears this, they decide to treat it like a big motion picture, complete with putting makeup on animals, staging scenes, and others. In the end, just as when Dimwit gets enough footage, the camera breaks and the film comes out, overexposing them. When the two birds tell him that he'll have to shoot the footage again, Dimwit goes insane and runs out of the forest.
Struggling matrimony agents Heckle & Jeckle get one last chance to find a bride for a well-to-do client, a hippo girl. The father of the 400-pound girl offers our heroes $1,000 if they can get his daughter married. She has fallen in love with trapeze artist Dimwit the dog. Dimwit wants no part of the obese society matron. But the pair finally get the hapless circus performer to sign a marriage license by making him think that he has signed up with a much more prestigious circus run by C.B. Barnyard (Jeckle in disguise).
Undercover treasury agents Heckle and Jeckle are assigned to test a new security system at the United States Mint. The mint has two defenses: dumb guard dog Dimwit and a money-sniffing robot. The super crime-fighting robot is programmed to capture and destroy any and all thieves in the U.S. Treasury, and then return any stolen money to the mint. The duo manages to steal the money from the mint and return it to the vaults of the mint. When the going gets tough, Heckle and Jeckle toss the money to the guard dog. The robot seeks out the money and clobbers Dimwit, the chief security guard. Their assignment complete, Heckle and Jeckle are hailed as heroes. But Dimwit gets the last laugh when he sends the super crime-fighting robot after the hapless pair and sends them running into the streets.
The boys operate a run-down boat that they pass off as a sport fishing boat.
Heckle and Jeckle are stuntmen who try to sabotage the screen tests of the studio's newest TV star, Flint Locke, an actor who does all his own stunts.
Heckle and Jeckle set up the "Last Chance Service Station" in the desert, but quickly find out that it is in jeopardy when a tough bulldog wants to cut in on the action- opening up another gas station right next door. They begin a massive war with him (always being quite polite, of course)- blowing up each other's station, stealing customers, and moving the stations past each other until they run out of desert and end up in Los Angeles (changing the name to the "First Chance Gas Station instead). Heckle and Jeckle launch the dog into space on an oil drum (which they fit with a fuse) and paint his gas station with paint that makes it look like the road so that a truck drives through it. Finally, they drop him into the gas pump and pump him into the next customer's car.
Heckle and Jeckle's New Year's resolution is to refrain from any more practical jokes, but their attempts at good deeds meet with more hostility than their annoying gags.
Heckle and Jeckle lease their entire motel to a film company, who wants to film a TV series there. However, they start wrecking their rooms and furniture during the action sequence, so the magpies have to devise a way to get them out.
