Speedy Gonzales' cousin Slowpoke Rodriguez pays a visit to Speedy's hacienda. Sylvester the cat believes that he will be able to have Slowpoke for dinner. Incorrectly, because it turns out that Slowpoke is much smarter than he looks ("Maybe Slowpoke is pretty slow downstairs in da feet. But he is pretty fast upstairs in the cabeza"), when Slowpoke uses hypnosis on Sylvester after getting captured, hypnotizing the cat to become a slave for the two mice! The cartoon ends with a hypnotized Sylvester waving the hand fan around the table while Speedy and Slowpoke have cheese for supper. Slowpoke says "I like your pussycat friend. He's nice and stupid."
On Nickelodeon, the beginning where Sylvester is introduced as "The most pooped cat of all Mexico because he was chasing the fastest mouse of all Mexico" while Sylvester downs a bottle of pep pills was cut. Earlier Nickelodeon versions cut the entire part while later versions replaced Sylvester's pill-popping with a freeze-framed shot of a tired Sylvester on the ground.
On Cartoon Network and Boomerang in Latin America, one instance of Slowpoke Rodriguez singing La Cucharacha was edited to remove the line "marijuana que fumar" (evidence in here: https://www.youtube.com/watch?v=Vb9oWW7A3GQ). Other CN/Boomerang stations (including the only time Cartoon Network in America aired it in 2004) aired this uncut, leaving in both Sylvester popping pills and the "marijuana que fumar" line.