After Stanley Livingston brings them to the Megapolis Zoo, Tennessee and Chumley find a job outside the zoo as mechanics. Their first customer is Rocky Maninoff who warns them to repair his car or else. Tennessee takes advice from a newspaper ad to see Phineas J. Whoopee to learn how cars work.

Tennessee and Chumley get jobs as weathermen. A farmer demands they make rain for his cauliflower crops or he will use his shotgun on them. Tennessee and Chumley turn to Phineas J. Whoopee on how to make rain.

Tennessee and Chumley learn how lights work when darkness keeps Tennessee from reading his book.

Tennessee wants to have a telephone in each animal's quarters after carrying a message to the animals about Stanley's upcoming piano recital. Tennessee and Chumley turn to Phineas J. Whoopee to learn how a telephone works.

When Stanley Livingston wants to obtain a giant clam for the Megapolis Zoo, Tennessee and Chumley sneak out of the zoo to obtain one for him. Tennessee and Chumley visit Phineas J. Whoopee to learn where they can find a giant clam and how diving equipment works.

The Megapolis Zoo receives a clock tower. Chumley accidentally shoots an arrow at the clock and Stanley Livingston orders Tennessee and Chumley to remove the arrow. Tennessee and Chumley learn how clocks work from Phineas J. Whoopee.

The Megapolis Zoo receives a statue of Stanley Livingston that will be dedicated to him tomorrow. When Chumley accidentally wrecks it, Tennessee and Chumley turn to Phineas J. Whoopee on how to make a statue.

Tennessee and Chumley get jobs as photographers. Their first job is to take a picture of the Mayor of Megapolis for his poster. How do cameras work? Tennessee and Chumley turn to Phineas J. Whoopee to teach them.

When ordered by Stanley Livingston to spread the news to the other animals about an upcoming event, Tennessee and Chumley turn to Phineas J. Whoopee for ideas on other ways to do so. Phineas ends up telling them about newspapers.

When Jerboa Jump arrives at the zoo, Stanley Livingston arranges for some archaeologists to make a trip to Mexico to find artifacts to go with Jerboa's exhibit. Tennessee and Chumley learn about the Aztecs from Phineas J. Whoopee.

Tennessee and Chumley assemble a stovepipe oven to heat their quarters. They learn how coal is obtained from Phineas J. Whoopee.

When ordered by Stanley Livingston to spread the news of the town picnic at the Megapolis Zoo, Tennessee and Chumley, having already tried telephones and newspapers, turn to Phineas J. Whoopee for other ideas. Phineas tells them about hot-air balloons.

During a drought, Tennessee tries to figure out how to get water to his watermelon crops. Meanwhile, Stanley Livingston is warned by the Chief of Police not to waste water during the drought on pain of arrest.

Tennessee and Chumley get jobs as TV repairmen. Their first customer is Rocky Maninoff, who orders them to repair his television, or else. Meanwhile, the Chief of Police gets word from Stanley Livingston that Tennessee and Chumley have escaped from the zoo.

After getting knocked out, Tennessee dreams he is to be the first astronaut penguin to take a rocket to the moon.

In a follow-up to "Coal Minors," the tunneling that Tennessee and Chumley did for their coal mine has caused the foundation of Stanley's office to settle to one side. While Stanley and Flunky go into town to find someone to build a new foundation, Tennessee tries to straighten the foundation. When nothing seems to work, Tennessee and Chumley go to Phineas J. Whoopee for help.

Tennessee and Chumley get jobs as bridge builders. Rocky Maninoff wants them to build a bridge following his gang's bank robbery, or else.

Tennessee receives a dog named Howler from his uncle and tries to hide him from Stanley Livingston. To make a new home for Howler, Tennessee and Chumley call on Phineas J. Whoopee, who advises them on building Howler a house near a lake in Megapolis Woods.

Tennessee and Chumley go up against Jerboa Jump in a yacht race to determine who will end up leading the Zoo's Yacht Club.

Tennessee dreams that he, Chumley, Yakkety and Baldy are at a fort headed by Stanley Livingston that keeps suffering Indian attacks. Tennessee and his friends must find a way to warn the fort of approaching Indians.

Upon hearing Jerboa Jump brag that he has been in a rocket, Tennessee and Chumley visit Phineas J. Whoopee to learn how rockets work.

After Stanley has a steam locomotive put in the zoo to take children for rides, Tennessee tries to prove he can operate it as well... and proceeds to wreck it while Stanley is away. Phineas J. Whoopee explains how locomotives work.

A new animal named Tiger Tornado appears to be a narcoleptic, but he becomes a fierce fighter at the sound of a boxing-ring bell. Jerboa Jump teams up with Tiger and the two make the other zoo animals kowtow to their wishes. Tennessee and Chumley consult Phineas J. Whoopee on how to defend themselves.

In a follow-up to "Howl, Howl, the Gang's All Here," Stanley has problems with Howler the Dog when he mistakes the Mayor of Megapolis for an attacker. Stanley and the Mayor warn to Tennessee control Howler or the Mayor will have Howler detained. They consult Phineas J. Whoopee about dog training.

Chumley has a toothache and Tennessee tries various ways to get rid of the tooth. When one of the attempts ends up breaking Stanley Livingston's motor scooter, Tennessee and Chumley escape from the zoo and see Phineas J. Whoopee about how to deal with a toothache.