Publisher's Synopsis
Join Casey and Kiley on their Outer Space Adventure Brother and sister, Casey and Kiley, travel into outer space to a distant planet where they meet the aliens that enabled them to go back in time on their previous adventures. They meet a collection of aliens that monitor the universe and do what is necessary to protect it. While learning about alien cultures, the planet is attacked by space pirates. Working together as a team, the two children help the aliens battle the invaders. If not stopped, the space pirates will take over the universe. Can they stop them?
