Gadget brings Penny to the circus as he investigates a top-secret mission. The Inspector believes that Dr. Claw has replaced some of the circus performers with M.A.D. Agents! Gadget goes undercover as a clown to uncover the truth.
Dr. Claw kidnaps Professor Von Slickstein, the brilliant scientist who invented all of Gadget's gadgets, and takes him to the Amazon to build an army of Gadget-like robots.
Gadget enters the Gadget Mobile in a race and finds that Dr. Claw has also entered with a plot to eliminate him and his competition by sabotaging the other race cars.
Gadget is sent to India to investigate a missing ruby, which has been stolen by M.A.D. to be used as an amplifying power source for a laser beam that will destroy an advanced satellite in space.
Gadget has to guard the life of famed rock singer Rick Rocker, whom M.A.D. has sinister plans for. But Gadget winds up replacing Rocker as the current reigning King of Rock!
A prophet working for M.A.D. predicts doom for an island resort and plans to use his "pineapple bombs" to trigger the island's volcano to ensure his prediction comes true.
Presto Chango, the world's greatest disguise artist and a M.A.D. agent, plans to infiltrate an Interpol conference in London disguised as Inspector Gadget.
M.A.D. agent Rat begins committing crimes in an easy to predict pattern to lure Inspector Gadget into a steel foundry that has been turned in a deathtrap.
A new supercomputer has made the Metro City police so efficient that Chief Quimby fires Gadget but M.A.D. has a plan to control the computer and feed the police false information.
Gadget is assigned to protect Professor Greenfinger who has developed a super plant growth formula, but Greenfinger has already been replaced by a M.A.D. agent.
Ships are vanishing in the Bermuda Triangle, but the seemingly supernatural aspects of the disappearances are subterfuge by Dr. Claw, who is using an enormous machine to swallow oil tankers and ransack them.
Penny won a computer contest and is in Japan helping her local counterpart, Atsuko, to foil an alliance between Dr. Claw and his Japanese counterpart, Iji Waruda-san.
Gadget visits the Balkans to stop a war between a tribe of super-strong men and super-strong women while Dr. Claw tries to steal the potion that gives them their uncanny strength.
Gadget is sent to Hong Kong to recover the priceless jewel the Eye of the Dragon and foil an alliance between Dr. Claw and Hong Kong's crime-lord Mr. Chow.
M.A.D. engineers an android replica of Inspector Gadget that is used to steal from Metro City's banks in order to have the real Gadget framed for armed-robbery. With our hero wrongfully incarcerated, Dr. Claw sets his sights on kidnapping the Shah of Freeland and demanding a hefty ransom for his release.
In the far-off country of Pianostan, the people remain happy as long as their King is miserable. But M.A.D. has been ensuring that the King is happy in order to disrupt the peace, so Inspector Gadget is sent out to investigate. To further complicate matters, the King looks exactly like the Inspector!
Inspector Gadget, Penny, and Brain are on vacation in the Caribbean. But before they've had a chance to get any serious R & R on Gadget's dilapidated old rust-bucket of a boat, duty calls and Inspector Gadget is back to work.
Gadget is assigned to find and shut down M.A.D.'s training center for its agents and Dr. Claw decides eliminating Gadget will make a good class project for the latest batch of recruits.
In Malaysia, the Wild Man of Borneo (a M.A.D. scientist), has both derived a virus from flies and concocted its antidote. A head-cold-suffering Gadget must stop Dr. Claw's plan to turn everyone on the planet into babbling, bubble-blowing imbeciles.
Gadget heads to Ireland to locate the Blarney Stone, "The national treasure of Ireland," when it's stolen by M.A.D. agents. While plotting to use a laser cannon to slice up the Stone and smuggle it out of the country, Dr. Claw dispatches the quarrelsome O'Shea Brothers to eliminate Gadget.
Dr. Claw tries to frame the gypsies of Freedonia for the theft of the Royal Coat of Arms. So Gadget investigates the gypsies while Penny and her new friend, Anya, try to find the real thief.
M.A.D. has abducted a prominent seismologist, who is coerced by Dr. Claw to construct a machine capable of generating deadly earthquakes upon the world. Gadget's case takes him deep within the Rocky Mountains, where his misadventures are compounded by a M.A.D. ranger agent and a grizzled, gold-crazed prospector.
Gadget heads for Mexico, where he must stop "The oldest Mayan artifact known to exist," the Emerald Duck, from falling into the hands of a M.A.D. agent -- a Mexican bandit named Macho Miguel. The Emerald Duck is the key to activating a powerful and ancient weapon.
M.A.D. utilizes satellite waves to cause local cows to stop producing milk, forcing consumers to purchase milk from "New Foods Dairy" (a M.A.D. front).
M.A.D. has enlisted the aid of the incarcerated Funny Money counterfeiting gang in a plot to generate millions upon millions of bogus dollars for Dr. Claw to use in his dirty work. Two of the gang's three members manage to escape from prison in order to set up shop, while the last and most talented member, a visually-challenged man named Squint, must be up to the arduous task of bumping off Gadget when he comes to the jail to investigate the break-out.
Dr. Claw creates a ray that turns gold into smelly cheese, planning to change it back once the government empties Fort Knox of the foul smelling stuff.
Gadget is assigned to protect "Nervous Nick" Defecto, a former M.A.D. agent, from Dr. Claw's wrath. In revenge, Dr. Claw takes Chief Quimby hostage and offers him in exchange for his wayward agent.
Gadget must put a stop to M.A.D.'s latest plot for global domination, which involves the kidnapping of the world's leading solar scientists and coercing them to design and construct a solar-powered heat cannon at the grounds of mysterious Stonehenge.
Dr. Claw has concocted a chemical compound that decomposes wood at an accelerated rate, which he threatens to unleash upon the world's forests in exchange for a hefty ransom.
Gadget arrives in an Arabian country where he is believed to be the prophesied one who will find a long lost treasure cave. Dr. Claw is eager to let his old enemy lead him to the treasure before eliminating him.
A slick game show host mesmerizes contestants when they enter his TV program's sealed "21"-like booth, which is outfitted with hypnotic lights. The contestants are then commanded to rob banks and turn over the stolen loot to Dr. Claw. Gadget investigates, but becomes another victim of the hypnosis.
Gadget goes to the Winterland Resort where the world's athletes are gathered for the opening of the Olympic games. Dr.Claw tries to ruin the Olympics by replacing the torch bearer with a M.A.D. Agent and replacing the torch with dynamite.
NOTE: This was a re-worked version of the pilot episode "Winter Olympics". Some of the dialogue was re-dubbed to address the purpose of Gadget's mustache, and the standard season 1 opening and ending credits were used.
