On the first day of seventh grade, Rex encounters a bump in the road -- a big angry pimple right in the center of his forehead. And this is only the beginning of his problems. What follows is a frustrating battle with stubborn acne, body odor, and other embarrassments of puberty. Still struggling with a home life edging on the poverty line, Rex can't afford to buy the acne medication or deodorant he needs, and bullies are noticing Rex's awkward transformation.