In the city, George lives in an apartment building with The Man in the Yellow Hat and in the country they share a small house near Lake Wanasinklake.
But when Compass comes flying in and George tries to show him the clock he accidentally breaks it and then winds up taking it completely apart when he tries to fix it.
George eventually tires of watching and decides to go to bed, but a strange and annoying sound in the house keeps him awake.
When Mr. Quint and his brother have business to attend to, George is left in charge of the station and must arrange the trains so they all arrive in counting order.
": 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.
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.
Dr. Einstein and Professor Pizza explain that the spaceship has a self-locking air lock but they accidentally forgot to make a way to open it from outside.
Mr. Zoobel, George's upstairs neighbor tells Mr. Glass that he knows of a painter named Soo Berm who lives at the zoo.
The only problem is that the painting has colors like green and lavender and all George has are red, white, blue, yellow, and black.
After Hundley's collar winds up getting lost down a storm sewer, two women from the local animal shelter think he's homeless and take him away.
He brings along Gnocchi, whose cuteness would make a great distraction and Charkie, who could probably figure out how to open the cage being the escape artist she is.
Afterwards, George is faced with another clog, this time in the dishwasher and decides to fix it himself, dismantling not only the plumbing in the apartment but also in the basement.
"A Bridge too Farm": The Renkins' chicks get stranded on a tiny island and George has to improvise a way for them to get to land, using some items he picked up for a cookout.
"Ice Station Monkey": The Man With The Yellow Hat and George go to Antarctica to observe the habits of chinstrap penguin when a snowstorm traps them away from their base.
Reference: the opening line is a play on Mark Twain's comment "The coldest winter I ever spent was summer in San Francisco".
However, George has trouble finding a place to keeps them for that time until The Man With The Yellow Hat helps him build a worm farm.
He entrusts George to keep it safe from Gnocchi who thinks it is a really long cat toy until a lady from the world record book can come to measure it.
"Downhill Racer": George loves cars and when he hears about the annual Soap Box Derby race in the country, he and Allie decide to enter.
The Doorman tells him what he needs to throw a good party, which includes cake, decorations, and friends, but George picks the wrong sizes for everything which leads to disaster.
"Go West, Young Monkey": The Doorman orders a western town for his train set and Steve, Betsy, and George offer to help him put it together while he's at work.
When the group accidentally sends a small pin from the train track into one of the plant pots, they must dump out all of the soil to search for the missing piece.
"Hamster Cam": Steve & George are busy making a map of the city while Betsy is doing a little experimenting with Professor Wismean's new micro-sized camera.
When Allie and George see an article in the paper about a giant statue of a dog, they decide to make one as a tribute to Bill's thumb.
George begins his work cleaning the city but a lot of the things he sees being thrown out are too amazing to put in the trash.
George and Bill find a fancy new kite at Ada and Luke's General Store and decide to place it on layaway until they can get enough money to buy it.
"George's Backwards Flight Plan": Professor Wiseman is set to launch B.I.R.D., her bird migration tracking device, but the remote control isn't functioning properly, as everything on it is reversed.
"Submonkey": When Professor Pizza's birthday present is dragged away by a strong ocean current, George volunteers to take an undersea adventure in a monkey-sized submarine to retrieve it.
"Monkey Goes Batty": A hole in the roof means George and the Man with the Yellow Hat must sleep in the living room while their bedrooms are being repaired.
"George's Photo Finish": Today is the big unveiling of the Ankylosaurus dinosaur skeleton at the Museum, but it's missing a leg.
With a little help from sponge shapes, red paint, and a waffle iron, George creates the first ever monkey Valentine's Printing Press.