I.R. is jealous of I.M. Weasel (I.M. being the first on Mars, Jupiter and Uranus). But then NASA tells I.R. that he can become the first on the sun, and I.R. readily accepts the job. This creates quite the challenge for I.M...

Weasel is going to face a human in a ping-pong duel. A jealous I.R. tells the human that he's won a trip, so I.R. can duel Weasel himself. But as I.R realizes that he doesn't stand a chance, he resorts to cheating.

While Weasel is trying to cure an athlete's face patient, I.R. Baboon creates a cure which goes wrong and spreads it over the town.

I.R. is in charge on making a bridge from the U.S. to France, but when Weasel takes over, I.R. vows for revenge.

An accident causes Weasel and I.R. to drop their brains.These get swapped while being unconscious.

I.R. has his own ""Deep Sea Tour"" company, which takes people to the bottom of the sea.

It's Christmas, and I.R.'s family pays a visit. But when they go to Weasel's house instead, I.R. vows to ruin Christmas.

I.R. will do anything to get Weasel's role on his last movie.

It's discovered that I.R. is the king of the kingdom of Yurp, so Weasel must turn him into a gentleman.

I.R. destroys the Law of Gravity (literally), which causes all lawyers to float (since they are the only ones that understand law).

I.R. starts his own pig farm, covering the whole town with an awful stench.

I.R. falls in love with a flower he has grown.

Two dudes take a group of beavers hostage and Weasel must save them.