The mice are on the loose after hours in a doctor's office, playing with the various pieces of medical apparatus. Susie Mouse is caged for research until her lover Johnnie frees her. A mouse orchestra plays a swinging wedding song. But throughout, a cat is stalking...
Yosemite Sam hunts Bugs Bunny.
Bugs tells stories to his nephew Clyde derived from earlier cartoons ("Baseball Bugs", "Stage Door Cartoon", "Rabbit Punch", "Falling Hare", and "Haredevil Hare").
A rough and tough bulldog named Spike sets out with his admirer, a small dog named Chester, to rough up a cat. They encounter Sylvester and chase him into a junkyard, where a black panther that escaped from a zoo just happens to be hiding out. Every time Spike goes into the junkyard to thrash Sylvester, he is clawed into pieces by the panther, which he, in a dark maze of crates, thinks is Sylvester. Chester has no problem pummelling Sylvester before Spike's eyes, which convinces Spike that Chester must be tougher than him.
A lion wants to prove he's still "King of the Jungle" and, to prove it, he hunts rabbit.
Bugs Bunny encounters the legendary giant.
Bugs must joust with Sir Pantsalot of Drop Seat Manor when he tosses a partially eaten carrot into a suit of armor.
Bugs takes a wrong turn off the Hollywood freeway and tunnels into the headquarters of Napoleon Bonaparte.
Sam, the Duke of Yosemite, will inherit one million pounds if he can keep his temper in check. Thing is, he has to endure Bugs Bunny as his house guest.
In his Hollywood home Bugs is being interviewed by the Edward R. Murrow TV show "People to People" when Daffy and Elmer show up.
Bugs entertains the Sultan with tales from his cartoons: "Bully for Bugs", "Sahara Hare" and "Water, Water Every Hare".
Bugs Bunny and Yosemite Sam duel with trains in an Old West shootout.
Bugs fights with Blacque Jacque Shellacque over Klondike gold.
Big Bad Wolf and his little nephew try to trap Bugs Bunny by making like fairy tale characters.
Viking Yosemite Sam arrives to storm the castle. But Bugs takes charge of the defenses, and between Bugs' cleverness and Sam's stupidity, the castle is never seriously threatened, even when Sam enlists the help of an elephant.
Wile E. Coyote tries yet again to catch the Road Runner.
Sylvester Cat tries to catch Tweety Bird, who is up in a tree in the middle of the city dog pound.
Bugs will not bend to the threats of the pirate Yosemite Sam.
Sylvester's carnivorous pursuit of Tweety Bird continues, winding up the cat's spirit in Hell, where he meets a satanic bulldog.
Penthouse dwelling Elmer Fudd brings home a beautiful flowering desert plant and - unknowingly - Bugs Bunny.