Decades before the events in Guardians of Terra, Peter and Gwen, two Janusians based on the Moon, are tasked with capturing an upcoming event that promises to have a global audience on Terra. But neither are overly enthusiastic.

Peter doesn’t keep up to date with what’s happening on Terra and is not even aware that Terrans have already ventured into space. Meanwhile, Gwen is horrified that her people are even considering spying on the Terrans in their time of historical greatness.

Despite their objections, Peter and Gwen set out to capture the event. But after an error of judgement, both must scramble to stop the Terrans from realising the truth: mankind has already walked on the Moon.