After millennia of warfare, the planets Prastor and Distrel may have finally achieved a lasting peace. Investigating on behalf of the Federation, Captain Kirk is shocked to find out that the architect of the peace is none other than that notorious con artist, Harcourt Fenton Mudd! Mudd claims to be a changed man, but Kirk has his doubts. He knows that Mudd has to be running some sort of scam, but what is he up to? Kirk must find out soon -- before the peace gives way to unending war.