Zack is a lively, lovable chimp who already knows how to do so much. He can tie his shoes, crack an egg, and play tetherball,. But when he gets to school, he discovers so many new things to do. He learns to write his name, sings the alphabet song, and plays with his new friends. Then it's his turn to show his friends how to crack an egg. Whoopsy! The egg misses the bowl, but Zack also learns it's okay to make mistakes. It's all part of growing up!