After attempting to illegally crossover into Ul Qoma, Mr Geary is taken by Breach and swiftly deported from Beszel with his wife. Borlu is desperate to know who Mr Geary was planning to meet, but it is out of his hands.
When the body of a foreign student is discovered in the streets of the down-at-heel European city-state of Beszel, it's just another day's work for Inspector Tyador Borlu of the Extreme Crime Squad. But he uncovers evidence that the cuddled girl came from Ul Qoma, a city that shares a dangerous and volatile relationship with Beszel, and this case will challenge everything Borlu holds dear.
The two cities have differing societies, cultures, technologies and language, yet co-exist in the same geographical space. The separation is achieved by the residents of each city "unseeing" the other, while being aware of it, and the separation is enforced by a shadowy organization called Breach. While crossing the border is possible (after a lengthy re-orientation process), those who "breach" the separation illegally are taken by Breach and disappear forever.
The City & The City - Ul Qoma Synopsis and Schedule