Nothing extraordinary ever happens to Carol Peters, so when she starts getting snarky backtalk from her TV, phone and microwave, she thinks she's being punk'd. Or losing her mind. In fact, the world's first super-intelligence has selected her for observation, taking over her life with a bigger, more ominous plan to take over everything. Now Carol is humanity's last chance before this artificial intelligence-with-an-attitude decides to pull the plug.

Summer camp at Rim of the World has barely begun when four misfit teenagers -- Alex, ZhenZhen, Dariush, and Gabriel -- find they've got bigger problems to face than learning how to canoe and climb ropes when aliens suddenly invade the planet. Alone in a campground once teeming with people, the kids are unexpectedly entrusted with a key that carries the secret to stopping the invasion. Without any adults or electronics to help guide the way, it's clear what they must do: band together, conquer their fears, and save the world.