Lost-then found shoe

So what happens when you take 3 kids to Wal-Mart and they act like crazy wild animals, and when you get home you can't find one of those kids other shoe? You go all the way to the mall and buy more shoes right? And then what happens when you get home? You find the "Lost" shoe. So now that kid has 2 pair of shoes, Good thing huh? Anyone guessing on which kid? If you say Isaac you are a winner!!!