Readers experience a day in the life of a middle kid, and all the highs and lows of a life in-between. When you're the middle kid, you're never the first nor the last to do anything. You're not the tallest or the smallest; you're babysitting one sibling but teased by the other. Stuck between a bossy older brother and a naive younger sister, Middle Kid feels left out of two worlds. But even if—and maybe especially because—it's always overlooked, this kid's own world is just as big and important as his siblings'.