After their counselor told them a story about spirits in the woods near their campsite, Ziggy and his friends get lost in that very place.

Ziggy and his friends can’t wait for space camp, where they’ll get to learn about weightlessness and how astronauts eat—and use the bathroom—in space! But Ziggy has another goal: he wants to meet some aliens. Purple, three-headed Martians, preferably, just like in his Mega Mighty Martian Blaster game. Once he gets to camp, Ziggy learns that real-life space travel is even more exciting than what he imagined. But when a mysterious, shiny stone...