In a future where the planet January is divided into eternal night and perpetual day, humanity's existence is precarious, confined to two ancient cities in the thin twilight zone. Sophie, a banished student from the orderly city of Xiosphant, survives her exile with the help of enigmatic creatures from the dark side of the world. Bearing a dangerous secret, she and her mismatched group of exiles must navigate treacherous politics and wild terrains. As time runs out, their quest to transform their dying world becomes a race against the clock in this tale of resilience, revolution, and the powerful bonds that may either save or doom a civilization.