The episode starts with the main four throwing a party at their house. Mr. Cat is eating chips while Kaeloo, Stumpy and Quack Quack dance to music. They start to wonder where Pretty and Eugly are, since they were invited as well. Just then, the twins arrive, and Pretty decides to make a grand entrance by getting her sister to knock down the front door and jumping in. The music stops and the main four simply stare at her in confusion, and she complains that the party doesn't feel like a party at all.
Pretty approaches Mr. Cat, who is drinking a soda, and asks why he isn't wearing a costume. It turns out that it's actually Kaeloo wearing a mask of Mr. Cat's face, and she starts doing the "booty dance". She then explains that she had a "very original" idea, which was dressing up as Mr. Cat. Kaeloo sees Mr. Cat sitting on the couch and asks him why he isn't wearing a costume, but she finds out that it is Quack Quack, also disguised as Mr. Cat. She starts to feel disappointed since her "original" idea isn't original anymore. Mr. Cat starts to flirt with Pretty, and she is charmed - until she finds out that it's Stumpy disguised as Mr. Cat. She tries to hit him, but she can't bring herself to hit anything that looks like Mr. Cat, so she calls Eugly to hit him instead.
Stumpy, Kaeloo and Quack Quack start arguing about which one of them gets to dress up as Mr. Cat. Suddenly, Bad Kaeloo appears behind them and roars at them, and Kaeloo is confused. It turns out to be Mr. Cat in a costume, who hits them all on the head with mallets as if they are xylophones. Kaeloo decides to hold a competition to see who is the best fake Mr. Cat, and invites the real Mr. Cat to judge the competition. She lists off several of Mr. Cat's character flaws, which takes until night, and says he should decide who exhibits most of those qualities.
Quack Quack is called up to the stage for his act. He does a magic trick and turns a sheep into a chainsaw, and Stumpy starts booing him from the audience. Kaeloo gets Stumpy to stop, and then she calls Mr. Cat to comment on Quack Quack's impersonation of him. Mr. Cat demonstrates the way he would actually use a chainsaw, by cutting Quack Quack in half. Kaeloo tells Mr. Cat not to hurt Quack Quack, even for the sake of an example.
Next up is Stumpy. He jumps out of a cat flap and chases Quack Quack around, and Quack Quack hides behind a picture of Bad Kaeloo. Stumpy attempts to French kiss with the picture, and Mr. Cat, embarrassed by this, goes onstage and retaliates by insulting Stumpy's sister before kicking him offstage and calling for the final competitor, Kaeloo. Kaeloo does a terrible job, holding her fingers like a gun and yelling "I'm so bad!" Mr. Cat decides that they all did horribly, and says he is inimitable.
Pretty decides to do an impression of Quack Quack by flapping her arms and saying "Quack". Stumpy hits her with a giant mallet, still pretending that he is Mr. Cat. Kaeloo tells Stumpy that the competition is over, but he points out that Mr. Cat didn't say who won, so it is still going on. Kaeloo starts searching for Mr. Cat. She sees him, but it turns out to be Quack Quack in a disguise. Pretty (actually Mr. Cat disguised as Pretty) informs her of Mr. Cat's whereabouts, and Kaeloo thanks her before realizing that it was Mr. Cat in a disguise. She subsequently attacks the real Pretty, believing she is Mr. Cat. Stumpy notices that Kaeloo seems to have gone crazy, and he informs her that Mr. Cat is rolling around on the ground clutching his sides and laughing. Kaeloo says that Mr. Cat should impersonate Quack Quack so that the others can do more accurate Mr. Cat impressions.
The episode ends as Kaeloo, Stumpy and Quack Quack chase a screaming Mr. Cat around the stage with his own weapons, and Pretty and Eugly watch from the audience.
- Quack Quack
- Mr. Cat
- Kaeloo does not transform in this episode.
- This episode revealed that Stumpy is aware of Mr. Cat's crush on Kaeloo.
- In the shot where Kaeloo finds out that Quack Quack is also dressed up as Mr. Cat, Pretty is nowhere to be seen. However, in the very next shot, she is shown standing in front of Eugly.