To the students at exclusive Greycliff Academy, Kirby seems to have it all: charm, brains, and a lucky streak that won't quit. He's also the notorious mastermind behind the snarky videos, "7 Good Reasons Not to Grow Up," which expose how being an adult isn't all it's cracked up to be. Why would any kid want to become one of them? But there's also a mystery about Kirby. And when his best friend, Raja, finds out that Kirby isn't the person he's pretending to be, Kirby, Raja, and their friends may be forced to grow up sooner than they think and face the world head-on.