Dark clouds gather over the once peaceful landscape. Wild barbarians, lured by Catan's wealth and power, maneuver to attack. The massive warships loom across the horizon.
You must be strong! The Barbarians attack the weakest targets, and the victim of their onslaught will be the player who contributes the least to the defense of Catan. Don't take any chances! Field your knights!
In Cities & Knights of Catan, you engage in the defense of Catan, and compete to build the three great metropolises of Catan. Each of these magnificent centers are even more valuable than cities and are safe from barbarians. You must invest in city improvements, which you acquire using commodities of trade: Coin, Paper, and Cloth. If you improve your culture, muster your knights, and enrich your cities, you will be the master of the great realm of Catan!
From the back of the box.