Critical difference

A young colonial survey officer stationed on an icebound outpost confronts an abrupt deepening of the planet's cold and a puzzling, stuttered beam from the inhabited parent world. He and colleagues record and analyze the broken high-pitched pulses, apply principles of early signaling and information theory to decode an interrupted message, and confront technical and environmental challenges while coordinating the fledgling settlement's response. Themes include the fragility of human systems in extreme environments, the reliance on tenuous communications, and the practical application of signal analysis under pressure, with a tightly focused narrative that blends problem-solving and survival stakes.