Huntley Mulligan has always been half of a well-matched pair. A self-admitted "atmosphere geek" who loves his large family more than anything else, he has no desire to ever grow up. But now his twin sister, Haven, is weeks away from leaving for college, and what is a guy to do, especially one who hates change as much as Huntley does? In a last-ditch effort to figure out his pending college major, he attends weather camp, leaving home for the first time in his sheltered life. He's excited for the adventure, except for one thing: Bellamy Brown, a longtime friend from homeschooling days who drives him crazy with her incessant teasing and chaotic life choices. This time Bellamy has a new plan, and Huntley is intrigued when she suggests helping each other find a camp fling. On his own for the first time, will Huntley cave to new temptations? Or will he discover that the first step toward forever was closer than he ever realized?