Rex embarks on a week-long mission to map the moon’s surface, scanning for Lunite and uncovering mysterious anomalies. Along the way, he faces unexpected discoveries, including a strange cave with an otherworldly arch and a mysterious briefcase. Joined by his energetic friend Chris Knight, Rex balances humor, adventure, and big decisions about the future of the moon. With 11 beacons set and the moon’s secrets mapped, Rex returns home with a sense of excitement—and more questions than answers.