Relates how Mac, the apple, and Will, the worm, become friends.

With help from her Grandma Barb, Marty builds a habitat for worms in her school cafeteria as part of the Save the Earth Project.

On a slightly scary camping trip to study stars in the night sky, Owly and Wormy make new friends.

Teaches the reader to count to ten using worms that have great adventures or everyday experiences, described but not illustrated due to the author/illustrator's inability to draw anything but worms.