So begins the story of Scab McNally, a fourth grader with a mission. Part inventor, part daredevil, Scab is determined to let nothing get in the way of convincing his parents to let him buy a dog — especially his "smart times ten" twin sister, Isabelle. When his newest invention, a sister-repellent spray (aka Isabelle's Smell), becomes a hit with the guys, Scab hatches a plan. He'll earn enough selling Isabelle's Smell to buy a dog, and then his parents will have to say yes, right? But one broken bottle of the mega-stinky concoction brings major disaster, not to mention a hazmat crew. In the midst of his self-pity, Scab realizes that his drive to get a dog has hurt the people he cares about most. Will Scab be able to set things right? Find out in author Trudi Trueit's laugh-out-loud novel introducing the irrepressible Scab McNally to the world.