If I Had One Wish...

When a mysterious bag lady hands Alec a strange coin and tells him it will grant him one wish, Alec thinks she's crazy. But then, in a fit of anger, Alec wishes his little brother Stevie had never been born, and Stevie disappears! — Not only is his brother missing, but Alec's whole family has changed. It's as if, well, as if Stevie has never existed. And now it looks like it's too late to change things back...