While charting an unremarkable planet in the newly discovered Shackelton Expanse, the USS Leif Erikson uncovers a vast network of underground tunnels and caverns — echoing the designs of an empire long past. As Captain Bowman and his crew descend into the ancient halls, strange mechanisms awaken, and murals begin to appear that tell the story of beings who once walked among the stars. Now, as the boundaries of history and myth begin to blur, the Leif Erikson must decide whether the truth they’ve unearthed is a discovery to celebrate…

Or a warning left behind.