Cockroach Dee Dee gets trapped in a bottle and is then captured by Oggy. Oggy locks Dee Dee up in the refrigerator and now Joey and Marky will attempt to rescue their friend.
After Oggy consumes a piece of glowing chocolate (obviously placed by the roaches), Oggy transforms into a cockroach himself, much to the cockroaches' amusement. Little by little, Oggy gets used to his new appearance. Then Jack shows up.
Today's Friday the 13th, and Oggy's broken his mirror. A guaranteed 7 years of bad luck. Throughout the day, Oggy gets involved inquire a few accidents associated with bad luck.
Jack has to pay a major debt, so he brings a attaché of green-backs to Oggy's house and hides it under the rug without revealing Oggy any details about it.
While Jack's hooked up on video games, Oggy decides to pass time with his old train set. The cockroaches see light of the situation, and use the train.
After getting accidentally run over by Oggy's new remote-controlled lawnmower, the cockroaches get their revenge by forging their own cat-destroyer machine that looks like a mouse, but acts like an alligator.
As a prank, the cockroaches inflate Oggy's belly, making him think that he is pregnant. However, he will soon find out that only girls can have babies, and not boys.
Oggy takes driving lessons from a blind and partially deaf driving instructor and the cockroaches interfere, shifting the experience into chaos around town.
A mouse makes his way into Oggy's household, taking whatever he wants, namely food and shelter. Oggy has a fear of mice, and even the cockroaches are not getting on well with this uninvited guest.
Oggy is playing with his doll and its included playhouse. The cockroaches, however, have taken the playhouse for themselves and when Marky spots the doll, he falls in love with it and marries it.
Oggy finally manages to remove the cockroaches out of his home permanently by sealing them in a food can, but gradually regrets doing so, as he starts to miss them, leading to a severe tantrum.
Oggy and Jack, after eradicating the cockroaches from their house, receive 3 baby kittens that look like Jack - little do they knew and suspect that these bundles of joy are actually the roaches in disguise.
The carnival has come to town, and Oggy and Jack are more than happy to go to it. The cockroaches also decide to go to the carnival, just to have massive fun wreaking havoc all over the place.
Never at a loss for finding things to teach his cousin, Jack takes Oggy fishing. Nature, fresh air, the chirping of birds in the shade, what is more relaxing than this innocent sport?
While Jack takes up mountain climbing, Oggy intends on reading a good book from his library, only to end up getting stranded in some very high book shelves by the cockroaches.
Oggy and Jack have a meal out at a fancy restaurant in New York City. Things take an unexpected bad turn, as the cockroaches keep stealing their orders and Jack can't wait any longer to tuck in.
Poor Oggy, as usual, gets in an accident involving Jack against the cockroaches in retaliation of his cake being eaten, ending up being squashed into a disk.
Overweight Oggy decides to keep fit, much to the dismay of the cockroaches. They decide to perform the usual sabotages to make sure that Oggy stays the way he is.
Dee Dee is just swimming on Oggy's yogurt, when, unknown to him, Oggy drinks it up, and Dee Dee along with it. Dee Dee then travels around Oggy's insides and decides to give Oggy the mother of all indigestions.
Oggy desperately needs to use the bathroom, but the cockroaches have it occupied and do all what they can to keep him out of it. Eventually Oggy manages to use the bathroom but the cockroaches end up trapping him there.
The cockroaches rent Oggy's house to a redneck who literally kicks Oggy out. In order to get his house back, Oggy finally rents it out to an obese wrestler who is even bigger, or worse.
Oggy and Jack are going fishing but Oggy tries to catch the cockroaches as baits - and these baits sure can bite back. In the end, the bait captures the cockroaches and uses them as fishing baits.
Taking a simple bath soon escalates into a desperate struggle for Oggy when the cockroaches deflate his floating ring, especially when Oggy is extremely afraid of water.
Oggy's granny comes to visit. It is her birthday, and all what she wants is three dead cockroaches. However, after Oggy's granny caught both Marky and Joey, she saw Dee Dee being sad after this situation.
Oggy has found a lot of new toys for him to play with during Christmas Eve, but when an extended boxing glove punches Jack, his brain gets knocked out of him and the cockroaches use it as a toy.
What started out as a sip from a simple cup of coffee turns into intensely strong hiccups for Oggy, and while attempting to steal his fridge, the cockroaches get involved with his situation.
Jack arrives with a put-it-together-yourself roach-catching trap. When he tries to get some silence to work, the cockroaches try their best in causing as much noise as possible.
Oggy gets a video camera in the mail and attempts to film the cockroaches' final demise. However, just as he could get to watching the end of it, the roaches decide to get their ultimate revenge by stealing his tape and humiliating Oggy.
It is all out Cyberspace War as Oggy, with his vacuum cleaner, and Joey takes the daring voyage in the electrical system to the internet in order to return to the real world.
