Weasel tells his story to psiquiatrist Sigmund Fraud about his mishaps with I.R., at the same time I.R. is telling his own mishaps with Weasel in the room next door.

The adventures of the noble, generous, intelligent and good-at-everything I.M. Weasel, who must compete once again with his arch-enemy, the bumbling, brainless and utterly talentless I.R. Baboon.