 A woman lives with her seven-year-old daughter and newborn son in an isolated house in the middle of a mournful landscape; it seems as if winter has encased everything in a bluish, glass-like shell. The nervous woman is filled with a sense of dread and fear, which she tries to sate by taking walks in the woods. Her husband doesn t get home till late, the baby is sick, and she worries about his welfare until she is absolutely frantic. Not understanding his wife s problems, her husband suspects her of exaggerating her mental breakdown. He is unwilling to admit that even his daughter s behavior has altered. Something ominous is infiltrating the atmosphere of their home....