From the Inside Flap
Hologram Fun World. It's a theme park visited by families from all across the galaxy. It's a place where Tash and Zak can safely hang out while Hoole continues his work. It's a place where daytime fun turns into nighttime terror.
One of the park's attractions is called the Nightmare Machine. It scans your brain, then shows you your worst fears in holographic form. Hairy, creepy-crawly insects. Cyborrean battle dogs thirsting for blood. But it's not real, so it's fun--right?
As Zak and Tash will soon find out, nightmares can come true.