We couldn't believe that our hard-earned money was missing! The two sisters, Betsy and Helen, have been working hard to earn enough money to buy a used bicycle. Then suddenly their envelope of money disappears. As they try to solve the mystery of where the money is they experience some challenges with a new girl in the neighborhood who is acting very mean and selfish. Through the busy days of that summer the sisters learn important lessons in forgiveness, fairness, obedience, and hard work. The story is filled with scary moments, fun surprises, character growth, biblical values, and the joys of family love and closeness.