For a school project, eleven-year-old Sandy Walker and T. J. McKenzie begin an old-fashioned snail mail correspondence. Both kids share a love of baseball and are growing up in single-parent homes. When T. J. comes for a visit to Sandy's home, they discover that neither of them is what the other expected. They learn the reality of a favorite old saying of their parents, "Be careful what you wish for; you might get it."