Junie B. Jones is back on stage at Childsplay, a theatre for kids, in a brand new adventure. This time, something terrible has happened. And it's called—someone took Junie B.’s new black furry mittens, and they kept them! So when Junie B. finds a wonderful pen of many colors, she should be allowed to keep it, right? Because Finders Keepers, Losers Weepers. And guess what? There's a new boy in kindergarten! So why does he think Junie B. is a nutball? With the help of her friends and a whole lot of laughter, Junie B. learns important lessons about being yourself and doing the right thing.