The adventure begins in this exciting new chapter book series!

When a four-inch-tall alien crash-lands through Zack McGee's bedroom window, Zack is sure he's about to become the first victim in a new War of the Worlds. But when the alien turns out to have weapons that are more ticklish than terrifying, Zack realizes that rather than protect the world from the alien, it's up to him to protect the alien in his pocket from the world.