Curly's bad mood travels from person to person, unexpectedly leaving opportunities for forgiveness, laughter, and love in its wake.

Grumpy Jim Panzee decides that it is time for a new Jim, so he enlists his friends to help him get mad so he can stomp all his grumps out, and become a new Jim for the new year.

"Have you ever had a grumpy day and not known why? Penguin is having a grumpy day like that. No matter what he does, he just can't shake it! Sometimes the only thing left to do is wash the grumpy day away and start over"-- When Penguin is having a grumpy day that he just can't shake, the only thing left to do is wash the day away in the bath and start over.

Jim Panzee wakes up in a bad mood one beautiful day, but he keeps denying he is grumpy even as his friends give advice for feeling better.

Feeling too grumpy to fly, Bird begins to walk and finds that his mood changes as other animals join him.

Grumpy Mr. Howlmeister, a feared legend in the town of Dinkerwink, has his heart changed by the love of a little girl.

"Billy is a grumpy boy who's not like the other kids. His mother takes him and his sister, Sara, to the animal shelter one Saturday in hope of cheering him up. But the pets he sees are too happy for his taste. Then he finds the grumpy pets..."--

Judy Moody cannot believe her ears. There at the lunch table, a girl called Amy Namey is interviewing Judy's best friends. Even worse, Amy is dressed like Nellie Bly, daredevil woman reporter. Is this girl with the rhyming name destined to be Judy Moody's new best enemy - - or new best friend? Judy finds some unexpected potholes on the path to friendship as Class 3T takes a tour of the globe, exploring everything from tooth-brushing sticks in Yemen...

The jungle animals try to share their excitement over Christmas with Jim Panzee, but he feels too grumpy to appreciate their efforts.

Edgar's bad mood begins as something small, but before long it grows, gathers strength, and sweeps through the entire town.