The Challenger Intermediate School Series is designed to help kids understand their feelings and learn how to cope with difficult situations. Joe's Hidden Treasure is a story about a boy who loses his father in a divorce. While Joe understands that his mother and father were having difficulties and not getting along, he blames his mother for the split and his life is miserable. Joe's self-esteem and love is restored by an unexpected visit with a neighbor who helps Joe understand how to find happiness by using his curiosity and hidden creative talent.