The agents of the Dark – the Night Watch – oversee nocturnal activity, while the agents of the Light keep watch over the day. For a thousand years both sides have maintained a precarious balance of power, but an ancient prophecy has decreed that a supreme Other will one day emerge, threatening to tip the scales. Now, that day has arrived. When a mid-level Night Watch agent named Anton stumbles upon a cursed young woman – an uninitiated Other with magnificent potential – both sides prepare for a battle that could lay waste to the entire city, possible the world.