House birds, parrots, and even the NBC peacock begin plundering the world's riches and delivering them to super-villain The Owl, so it's up to Cool McCool to stop his sinister crime spree.
When Jack-in-the-Box ships a raging bull in a box to Number One, McCool takes off in the Coolmobile, only to be trapped in a circus arena by Jack and two raging lions.
Tom, Dick and Harry discover that Mighty Morris is the Shoehorn Thief. When they move in for the capture Morris uses his strength to tie them up and shoot them into orbit.
One night Harry McCool and the Komedy Kops follow the delicious aroma of freshly baked pies in Mrs. Plotz' pie factory. There they run into a spy from Plintz' Pies, stealing Mrs. Plotz' secret recipes.
Hurricane Harry kidnaps Queen McQueen and is holding her for one million dollars ransom. The Foreign Office decides she is not worth it, so McCool is assigned to the case.
The Rattler kidnaps Professor B. Fuddled and steals his shrinking formula. Number One assigns McCool to the case. The Rattler strikes first and McCool is reduced to the size of a golf ball.
A practical joker wakes Harry Mr.Cool and the Komedy Kops with a phony siren. They take off after him, but realize they're not in good enough shape so they go to the gym.
Hurricane Harry announces that he intends to blow up the world until it pops like a balloon...unless he is appointed King. Cool McCool is assigned the task of deflating the plan, but Harry blows up McCool instead.
Hurricane Harry puts the world to sleep by blowing sleepy smoke from a pot on his island. Armed with a new sneeze gun, Cool approaches Hurricane's island by sea, but Harry blows him off course.
While Harry McCool and the Komedy Kops are arguing about who should get the back seat of their tandem bicycle: a crook gets away right under their noses. So the Sarge throws away their bike, and insists that they learn how to drive a car.
The Mockingbird imitates the voice of Number One and advises McCool that The Owl is really a secret agent. McCool falls for the ruse and finds himself trapped in a tree house.
The Sarge has ordered Harry McCool and the Komedy Kops to whitewash the jailhouse. In their rush to finish, they paint the face of their roughest prisoner, then they paint the Sarge, then they paint each other.
Film star Sophie Alluring is visiting the country, wearing a $99,000 diamond necklace. Jack-in-the-Box poses as a photographer and steals the necklace.
Dr. Madcap invents a love gas which enables him never to steal again. One whiff of the gas and people love him so much they give him their possessions.
As the Mayor is about to present the key to the city to a VIP, the Flying Demon swoops down and steals it. The Komedy Kops convert their bikes into a jet to give pursuit.
Number One and McCool look at the latest pictures of the moon and discover that The Owl is there with the loot from his latest caper. McCool flies to the moon, but winds up being chased by a herd of angry Moon Bulls.
Hurricane Harry realizes that he has a doppelganger in the Maharajah of Mish Mash, and intends to use this to steal his diamonds, unless Cool McCool stops him.
Harry McCool and the Komedy Kops pass a man with his arms full of candy apples. He's stolen them, and rushes to the airport, where he takes off in a balloon.
At the Policeman's Ball, Harry McCool and the Komedy Kops fall in love with Kathleen Klotz. An organ grinder's monkey steals her hair ribbons and the boys give chase.
