What would happen if the smallest and most overlooked forms of life suddenly disappeared? When a mysterious orange mist spreads across the planet, microbes begin to vanish—and the foundations of modern life start to crumble. Food production falters, wastewater systems fail, human health deteriorates, and society descends into fear and uncertainty. Professor Orim Rantag, a microbiologist who has spent his life studying the invisible world, finds himself at the center of a global effort to understand the crisis and restore what has been lost. But as science struggles to find answers, political control tightens and personal freedoms begin to disappear. The Day the Microbes Ceased to Exist is a science-based novel with a political twist—a story about the organisms we cannot see, the civilization that depends on them, and how quickly our familiar world could change.