George wants to be the first person, or monkey in the world to count every star in the sky after Bill tells him that no one has done so. The only problem, though is that George can't stay up at night to count all of them. So he finds a system to keep track of which stars he has counted because, since you can't see stars in the day, he can only count at night. Later on upon returning to the city, George finds that he cannot see the stars even at night because the city has way more light at night than the country.

The Man with the Yellow Hat has just won another trophy and George really wants to have one of his own. After helping Chef Pisghetti, though, George winds up getting one! It is the Chef's own Ice Cream Gnocchi! But it seems like it is always melting or splattering because he does not handle it correctly.

George and The Man with the Yellow Hat are looking at the Man's old childhood pictures when George sees one of the man's old lemonade stand. The Man with the Yellow Hat tells George about the time he got a new soccer ball because of it. So, George decides to make one of his own to replace his busted up soccer ball. First George has trouble finding a good location to set up shop, and when he finally finds a good place, people give him money!

One country day, George sees that a new traffic light is being installed along the road. Never having seen one before, not even in the city, George becomes curious. He sees that cars stop at a red light but not at a green light making him guess that most people preferred a red light to a green one. Since the light is always changing, George is disappointed because there is not much time for people to enjoy one color. So, he changes the light so that all of one side is one color. This winds up confusing drivers on the road until Officer Quint shows up and explains how a traffic light works. It is good for drivers but not Jumpy Squirrel who can no longer cross the road on a tree branch which was cut in front of the light and can't cross the dangerous road itself.

George has gone to Mabel's Department Store where they find that a girl named Cayley has opened up a new candy counter. George notices that all of her candies are unique, each in a different shape and color After Cayley has to run out to buy more ingredients she leaves George in charge of the counter. George is trying to examine the different types of candies when he knocks over all of the candy displays and must now find a way to count all of the candy and re-stack it.

George's antics have caused him to become caught in some bars on his balcony. The Man With the Yellow Hat is forced to call Rescue Squad 86 to help him out. After saving him from his sticky situation George becomes curious as to how firefighters do their job and all of the tools they use. But it seems like every time George tries to help out in the station he only ends up causing trouble. Soon, though they get called to the museum where it seems Compass the Pigeon is stuck in a high place and it seems like only a certain monkey can help.

Chef Pisghetti has come up with a new recipe for Giardino Burgers-hamburgers containing no meat. He trusts George to take a box of prepared burgers out to his truck to get sent to the annual firefighter's picnic but George accidentally puts them on the wrong truck. Having lost the burgers George recalls that the chef's recipe was all pictures. He finds the notepad where the chef had drawn everything and finds the recipe for the burgers. Or is it the Chef's plan to expand his rooftop garden?

George is playing with his ball in the country when he winds up losing it in a dark cave. He goes inside to look for it and gets scared by what he sees as monsters in the cave. Seeing that the same kinds of monsters are in his room, George becomes scared of the dark until The Man with the Yellow Hat tells him that the "monsters" are just the same objects as they are in the light and gives him a nightlight. But then a thunderstorm knocks out the power to the country house making him scared again. Remembering what The Man said, George returns to the cave with his trusty flashlight and Jumpy Squirrel to find out if the monsters really are monsters.

The Man with the Yellow Hat has just gotten his yellow hat back from the cleaners and it is clean, fresh, and perfect! But George's antics wind up nearly blowing the hat away and wind up with a twig caught in the hat. George tries to fix it and winds up pulling a thread loose, making a stain, and then a hole in the hat. He then needs to find a way to fix the hat before The Man comes home so they can go to the new Planetarium. First, George tries to make a new hat but everything he tries doesn't seem to work. Later, he realizes he just needs to fix the hole in the old hat.

It is a fall country day and the Renkins have just gotten the latest fresh batch of honey from their own bee farm. George loves to eat it on warm toast until he sees a bear that eats his snack! He also runs into a bee that stings him, making him afraid of bees. Later, George and Bill find out that all of the bees are in a beehive in Bill's backyard and he is determined to get rid of it so they don't hurt his bunnies. Then, the Renkins show George how bees make honey. George also tries to tell everyone that he saw a bear but nobody believes him because a bear has not been seen in the area for many years.

It is Mr Quint's birthday and his wife wants to throw him a surprise party. To keep him out of the house to prepare for the party, she sends him to George's house where George must keep him busy with his favorite snack, fish crackers. Later, though, he learns that there are 5 quints-quintuplets. With Mr. Quint there is also Officer Wint Quint, Clint Quint the station master, Sprint Quint the jogger, and Mint Quint the government money printer. George must evenly divide the fish crackers to feed all 5 of them long enough to not know about the party until it is time.

George could not take a bath without his favorite bath toy, Sproingy the bubble-blowing frog. Which is good because he often winds up needing several baths a day! He soon runs into Steve and Betsy's pet washing business and learns all about bubbles and how they always wind up round. After losing his bath toy, though, George needs to find it and will not take another bath until he does. This is not good because he is dirty and is tracking dirt everywhere he goes.

George and The Man with the Yellow hat are going on vacation in Hawaii. But when they get to the airport, their plane is delayed. George receives a small toy airplane from the ticket woman but winds up losing it. He goes on a quest to try to hunt it down before they must board their flight but it seems like everyone in the airport is out to stop George from wandering around or causing trouble. Note: One of the workers at the airport says that they are in Chicago, hinting that The Man and George live in Illinois.

George learns all about fishing from Mr. Quint at Lake Wannasinklake. Unfortunately, George does not catch any fish in the lake and only catches junk thrown in by other people. Soon, though, George finds an American eel and wants to catch it. He becomes even more determined when Bill says he wants to catch him to "take him home". George would like to catch it but he does not have a fishing rod.

A large snowstorm happened overnight in the country and George wants to go outside and play in the snow But it seems like the snow is too deep to even walk in. Later he comes across a group of kids playing in the snow and they give him a pair of snowshoes as well as a sled to quickly move through the snow. Later, Bill gives him a pair of skis. Soon, George comes across a pig that had wandered out the night before and has to find a way to get it home.

In the city, George wants an oven, (much like an Easy Bake Oven) but the Man with the Yellow Hat says it is too expensive. So, he goes to the grocery store and, without the owner's knowledge, helps shoppers and improves the business. When the owner notices he awards George Employee of the Month and pays him, which makes the Man proud.

George has come across a big field of beautiful wildflowers in the country. He decides to share the wildflowers with Leslie and the rest of the cows but Leslie eats them and they go after the rest. George wants to save the flowers from being eaten by cows. George tries communicating with the cows, distracting them, and building a wall, but nothing seems to work until he uses a strong wall to save one of the flowers causing the cows to not get past the wall. The failed items George uses to save the flowers is arrows but cows go through them, a scarecrow that has an angry face but the cows eat it, and hanging newspapers that the cows crash into.

George has taken interest in the new dinosaur skeleton in the museum. Professor Wiseman tells him that the skeleton was dug up over time from different bones, which were later assembled together. George decides to find a skeleton of his own and digs a hole where he finds a bone. He then tries to figure out what kind of animal the bone came from. The only problem is that Charkie keeps stealing his bone!

The Man with the Yellow Hat takes George camping. George becomes excited to go again and soon, goes camping with the Doorman and Hundley. But the Doorman has a very different way of camping with a trailer with "all the comforts of home". Soon, a thunderstorm knocks out the power source to the trailer and also floods it. The Doorman now has to camp in the traditional way but has no idea how. Fortunately, George remembers everything from his previous camping experience.

At the amusement park, George wants to ride the Turbo Python 3000, but he is too short. George has a measurement tool of sort on him-a whip of licorice. George has to grow the length of one licorice whip in a day so he can be tall enough to ride. Meanwhile, The Man with the Yellow Hat has a problem of his own. He wants to overcome his fear of roller coasters.

George's curiosity about bones leads him to climb the dinosaur skeleton at the museum but he ends up falling off and breaking his leg. George must wear a cast for a few weeks and stay home. Hundley stays with him as his monkey sitter. George begins in a wheelchair and does not know how to use it, but Hundley teaches him how to navigate around the furniture in his apartment. Soon, George can walk on crutches and Hundley helps him out in the same way. Later, once George can walk on his cast, he goes to places like the park with Hundley.

George sees Bill riding his bike and doing his paper route which make him want to do the same. The Man with the Yellow Hat finds his old bike and adjusts it for George before teaching him how to ride. But George forgets to look where he's going and crashes his bike, breaking it. Fortunately, Mrs. Renkins is quite the handyman and fixes his bike. After the Man buys him a George-sized bike, Bill entrusts him with a paper route which goes well, until George sees several ducks in a pond and wants to make paper boats like that time he went to the pond with The Man.

The Man with the Yellow Hat has a hobby playing the tuba in Rescue Squad 86's firehouse band. George becomes excited at the thought of a band, but the Man will not let George play his tuba. George then decides to make his own instruments and that his animal friends will be the ones playing them. The only problem is that his animal friends seem to get distracted too easily and, after causing a loud racket on the roof of the apartment building where they are practicing, someone calls the fire department.

George loves the country house. But sometimes he wishes he could live in something else, like a country castle. When The Man offers to take him to the beach to build sand castles, George decides to try to build the world's biggest sand castle. At the beach, they run into Bill and Mother Rabbit who loves to burrow. George has trouble building his sand castle because the sand does not want to hold together. Later, Bill tells him that only the wet sand down by the water is good for building. George tries building by the water but his sand winds up being washed away by the tide. Later, The Man tells George how to get good wet sand away from the water and he along with George, Bill, and Ma Rabbit work on the world's biggest sand castle.

George has been hearing some strange noises from the neighbor's apartment upstairs. He figures that if The Man with the Yellow Hat lives with him, why wouldn't their new neighbor? But The Man is determined not to let George spy on the new neighbor to find out. George guesses that with a loud noise like the one he is hearing, the new neighbor has an elephant. But then George hears some different noises. What is that neighbor's elephant up to now and how can George get The Man to believe that an elephant is living upstairs?