Seven eavesdrops on the others, learning their secrets so he can pretend to read their minds. Impressed, they arrange a big show for all the neighborhood kids, but of course Seven's act falls flat. He then admits he eavesdropped and apologizes to everyone.
After learning all about the moon from "Buzz" Three, Four decides to build a spaceship and go there himself. The others join in the spaceship they made, but their finished contraption won't go and lift off the ground. Four overcomes his disappointment, realizing that they still had fun, and learned a lot along the way.
The monsters wait impatiently for their cupcakes to finish baking. Since time passes more quickly when you are doing something, they partake of some typically bizarre monster activities, such as building an exact replica of the Taj Mahal in their backyard and swimming the English Channel in under 10 minutes.
Spurred on by hopes of winning a trophy and creamed corn, Six competes in a bowling tournament.
Two is trying to write a song for a contest and needs peace and quiet! His brothers and sisters are eager to help but being quiet is a real challenge for six rambunctious monsters!
Six wakes up from a bad dream and is too scared to go back to sleep. Each monster shares their worst nightmare and soon they are all shaking with fear. Mom reassures them that bad dreams are normal and can't hurt them, and the exhausted monsters fall right to sleep.
Six promises Mom she'll take out the trash this week, but instead she pawns off the chore on the other monsters. They simply stash the garbage bags throughout the house - out of sight, out of mind! When the whole thing blows up, Six must face the consequences of her broken promise to Mom, so then Six starts to cry.
During a baseball game the ball takes a bad hop and hurts One's wing. After a few days rest, One's wing is better, but she's afraid to rejoin the team. A talk with "Trot Along" Three convinces One that she's just got to "get back on that horse" and face her fears.
Mom is sick in bed and One promises to supervise the others in doing her housecleaning chores. When things start to go wrong, One doesn't ask Mom for help, preferring to tackle the problems herself. As a result, the monsters' cleaning efforts soon spin totally out of control and Mom must step in to restore order.
Similar to the story of Boy Who Cried Wolf, Two pretends to be injured after his stomachache is cured. But he soon realizes that lying about himself is not fun. Mom tells the story of The Girl Who Cried Sloth.
Two feels like his nose is an object of ridicule because, after Mary explains a story of Pinocchio, the other monsters mock him for how long his nose is.
At a baseball game a very loud Four annoys Six so much she wishes he couldn't talk at all. Her wish comes true when Four loses his voice and the monsters go on a search for it all over town. Back at home, Mom prescribes bed rest for Four, and soon his voice is back as loud as ever.
One decides to keep a crab as a pet and names him Buster. But soon, she realizes that Buster will be even more happier in his natural habitat.
The monsters notice the Zoo Panda is sad and lonely in a neglected habitat. The Zoo manager explains they haven't the resources to improve it. So the Monsters try to find ways to raise money, but everyone finds it silly when Seven collects Pennies.