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.

"Monos mal que Jim Pancé tiene su naranja antiestrés, porque parece que este paseo no será muy relajante, janque sí muy alocado y divertìdo"--provided by publisher "Jim Panzee is out for his usual Wednesday walk when he accidentally squishes his stress orange into orange juice. He and his friends must cross the jungle before all of the fresh oranges are gone"--

Jim Panzee feels that. Porcupine is having a big party, and according to Jim's best friend Norman, there will be--gulp--dancing. Jim can DEFINITELY not dance. When he tells his friends, they all try to teach him cool moves--surely that's the only reason Jim isn't excited about this party! Now, their job complete, the other animals sweep Jim along, all the way to the dance floor. Jim is dipped, swayed, and twirled until he can't take it anymore--he...

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

When Jim Panzee is banished from the jungle after making Oxpecker mad at him, his best friend Norman joins him, but when they end up in the desert and Norman is miserable, Jim agrees to apologize so they can go back home.

Jim has been asked to egg-sit, but he wants to have fun with his friends. Is there a way he can do both?

Jim Panzee, really likes bananas. And that's all he ever wants to eat. Good luck getting him to try anything else because he is a pretty picky eater.

"Para variar, ¡Jim Pancé está de buen humor! Va a ir a una fiesta de pijamas en casa de sus padres y lo acompañará Norman. A Jim no podía hacerle más ilusión todo lo que ha planeado su familia: irán a cazar termitas, pescarán mangos y contarán historias de terror. ¡Jim se muere de ganas de pasarse toda la noche despierto! Pero ¿qué ocurrirá cuando aparezca su hermano "pequeño?" ¿Por qué lo llaman fiesta de pijamas si nadie lleva...