Look up in the sky! Is it a falling leaf? A speck of dust? No, it is Stink Moody, the Solar System Superhero! Stink has always been a champion for small things, so when he discovers that Pluto has been kicked out of the planet club for being too shrimpy, he is absolutely furious. He feels like he might just explode with a Big Bang! Determined to save his favorite celestial orb, Stink launches a massive classroom campaign to restore Pluto to its rightful place in the Milky Way. But saving a dwarf planet is not easy. Stink has to face off against a panel of big-shot scientists and outsmart his know-it-all classmate, Riley Rottenberger. Can he prove that even the smallest planets deserve a spot in our solar system? Blast off into this funny, fact-filled chapter book that perfectly blends science with laugh-out-loud school drama. You will love cheering for Stink as he stands up for the little guy in an out-of-this-world adventure that will totally rock your universe!