The magic stone

"Kirby is a pessimistic kid. He's a good student with some close friends. But he's intimidated by schoolmate Lee, who always seems to have better grades and more friends. On the way home from school one day, Kirby saves a man from being hit by a truck. The man gives him a magic stone. You make a wish and rub the stone, the man tells Kirby. Your wish will come true. Kirby is skeptical, but then his wishes start to come true!"--Publishers website.