Peek inside the pop-up windows! Best friends Maxx and Darsey are fascinated by a planet far, far away on the other side of the galaxy, and when the chance arises to stow away on an exploratory mission, they cannot resist a trip to...planet Earth! Three-dimensional layered pages enable youngsters to explore every aspect of this tale of intergalactic intrigue. Peek through the pop-up windows, open the door to the top-secret facility, and discover what happens during the little aliens' fantastic voyage. It offers out-of-this-world reading for 3- to 7-year-olds. Maxx and Darsey live on planet X-Roxx in a solar system on the edge of the Milky Way. At school, the young aliens are enjoying learning about other planets. The one they like best is called Earth. They have intergalactic 'pen pals' there, called Ben and Joe. Maxx and Darsey would dearly love to meet their friends - and when they hear that Darsey's uncle is leading a research mission to Earth, they decide to tag along. Peer into the dark depths of the shuttle bay as they sneak aboard! Gaze through the ship's viewport into the vastness of space!However, when secret agents notice the little alien visitors on Earth, Ben and Joe must rush to their rescue. You can follow the brave youngsters down the long corridors of the Alien Holding Hub (or AHH for short)...Young readers will be gripped by this thrilling story, and the detailed pop-up illustrations will take them right into the heart of the adventure.