Two Latin American tree frogs, mischievous Rafi and his younger sister Rosi, enjoy the events of Puerto Rico's Carnival season.

Humphrey the hamster is puzzled when unfamiliar students fill Mrs. Brisbane's classroom at summer's end, but he soon learns that his friends from last year are fine and that the new class needs his special help.

Five tales recounting the adventures of two best friends.

Two friends share experiences in each season of the year.

When Humphrey the hamster returns to Mrs. Brisbane's class after the winter break, a new class pet and some other surprises give him an opportunity to reflect on the meaning of friendship.

Bored with just hopping and jumping, a frog discovers dancing.

Froggy is nervous about his first day of school, but, even though it's hard to sit still, he has a wonderful time.

Froggy hoped for a brother to play with so he is disappointed with his new baby sister, Pollywogilina, but only until she is old enough to start learning from her big brother.