Welcome to the impossible city! A city, a world of its own, a behemoth: This is New Crobuzon, populated by billions of people and mutants, oppressed by a strict regime and filled with the countless desires, fears, problems, and struggles of its inhabitants. When one day a strange creature escapes from the city's secret laboratories, no one suspects that this could be the downfall of New Crobuzon. Isaac Dan dar Grimnebulin is also unaware of the danger when he encounters the creature...