In the steam city "Ettelburg" where everything is driven by precision gears, all destiny is regarded as the predetermined trajectory of a huge machine. Karen is the "calibrator" of the city. He can see the operation of the chain of cause and effect and predict upcoming "failures." He has long been accustomed to this cold certainty, until he meets the musician Ilara - a woman who defies mechanical laws with her disordered melodies. When Karen saw Elara's inevitable death on the gears of fate, he had the urge to defy this cosmic machine for the first time. He must make a choice between the truth he firmly believes in and his uncontrollable emotions, and this choice may completely derail the fate of the entire city.
