Louisa and Sara are best friends. They laugh together. They read together. They play together, but they always avoid Barry, the boy who lives across the street. Then one day Barry hangs a tire swing from the large tree on the hill, and things change. They all become friends . . . well, sometimes!Louisa and Sara are best friends. They laugh together. They read together. They play together, but they always avoid Barry, the boy who lives across the street. Then one day Barry hangs a tire swing from the large tree on the hill, and things change. They all become friends . . . well, sometimes!