Bugs Bunny groggily climbs out of bed and his hole and, unknowingly, into a rocket ship that's parked directly above. It transports him into outer space, where he is chased by martians.
Tom, famous baritone Signor Thomasino Catti-Cazzaza, enthralls a concert audience with his rendition of "Largo al factotum", from Rossini's "Il Barbiere di Siviglia", while Jerry strives for sleep under the stage.
Ralph Wolf tries to forcibly remove Sam Sheepdog in order to gain access to a flock of sheep. Without success, he uses a lasso, cannon, a string of firecrackers, and a giant rubber band.
Tom is on the canals of Venice, singing opera. He ends up on a cruise ship, where another cat tricks him out of Jerry (who Tom has just caught), then mirrors his every move. Eventually the cats start chasing each other.
Among the strategies that fail in Wile E. Coyote's attempts to catch the Roadrunner: glue on the road, a giant rubber band, an outboard motor in a wash tub, and dressing in drag as a female Roadrunner.
Marvin the Martian is monitoring through his telescope a rocket launch on Earth. The rocket heads straight for him and lands on Mars. The only occupant is Bugs Bunny, lured into Cape Canaveral by a carrot and sent to Mars as an expendable "astro-rabbit". Bugs is to claim Mars in the name of the...
Jerry orders a vicious dog from a catalog, but when it arrives, it's even smaller than Jerry. However, despite its size, it launches an impressive attack on Tom