Twelve-year-old Peter Hatcher almost has it all — two boomer parents, a perfect though slightly odorous turtle, his very own bedroom in a cramped Manhattan apartment, a ride-or-die best friend Jimmy, and eight whole weeks of summer vacation ahead of him — with just one massive problem: Farley Drexel Hatcher, his 3-year-old brother, aka Fudge. Fudge isn’t just a problem; he is a tornado, a tsunami, a superstorm, an arctic bomb of chaos and destruction. When Fudge runs away under Peter’s watch, an epic family adventure across New York City ensues, one that ultimately brings these two together just as their world is turned upside down by the arrival of a brand-new problem — an infant baby sister — reminding us all that nothing is ever constant … except change.