During his busy day, Lowly Worm goes to school, helps Postman Pig deliver the mail, plays hide and seek, and flies his applecopter.

A pictorial representation of the development and uses of the wheel since prehistoric times.

Huckle brings his pet, Froggy, to school for show-and-tell.

When friends gather to prepare a birthday party for Lowly, there are many surprises including a most unusual cake.

When Sally Cat, Mr. and Mrs. Cat, and everyone at school come down with colds, Huckle and Lowly take care of their ailing friends in messy, silly ways that culminate in two more sick patients by the end of a busy day.

Huckle is thrilled to have a new red sled, but there is no snow.