A woman adored by the people around her ultimately struggles to be happy with herself.

Herman and Katnip in an art school.

From Press Kit: Katnip's serenading of a girl cat is interrupted by a tough cat that runs him off and takes over.The love-lorn Katnip is determined to best the muscle-bound cat and enlists the aid of Herman. Herman, with bad-intentions, puts Katnip through a muscle-building course which consists of weight-lifting, bar-chinning and equipment rigged with high explosives.

Unaware that Katnip is the night watchman, Herman takes his three nephews to Paramount Pictures Studios on a sightseeing trip. They sneak in and find fake alligators and a fake King Kong, but a real live Katnip. Herman promises to make Katnip a movie star if he will let them go.

Katnip teaches his little nephew Kitnip how to catch a mouse. Kitnip goes into Herman's mousehole and gets stuck under a pipe. Herman rescues Kitnip. Instead of being a supposed enemy, Kitnip becomes Herman's friend instead!

The mice are having a great time playing on a train in a department store's toy department until night watchman Katnip comes along.

Screen Song with spot gags about newsreels (including Paramount's own newsreel division).

A singalong with spot gags about vegetables.

Singalong with spot gags about an animal fair.

The cavemen go to the Paramountain Theater.