Cuwohf agency linguist Ulvisia Lasker sets out on an archaeological expedition to the Yeryong'oq moon in search of a cosmic lighthouse technology built by missing aliens. On the purple moon many races have come to find the same secret.
Ulvisia and technician Dokunan Yplik will have to face intelligent machines, aliens. In addition, the extinct species and the lighthouse builders have placed many traps that they will have to face if they are to succeed in unraveling the mystery.
But their worst opponents are not the ones we think they are.