Following Shore Leave the Pioneer is sent on what seems to be a routine survey mission. Since the CDF has it's hands full cleaning up the homeworld Cardassia requests the Pioneer to survey a planet and see if it is suitable for Cardassian colonization. Upon arrival the Pioneer finds signs of life on the planet complete with an unknown station. The crew of the Pioneer will have to answer the following questions. Why had Cardassia no known about this? Who built all of this? But most importantly where did they all go. It seems that Malbrooke, Ó Flannagáin, and the rest of the Pioneer crew have an old fashioned mystery on their hands.