Newly married and pregnant couple Bill and Kerry have just moved out to the suburbs of Boston to escape the hustle and bustle of the city. One night they are awoken from a quiet slumber by their neighbor Ted who is frantically sealing his house. Bill turns on the radio to discover that a dirty bomb has be detonated in Boston and the prevailing winds are carrying the nerve agent their way. Bill rushes to find the Emergency Preparedness Kit he prepared at the recommendation of Ready.gov and begins to seal his house. They awake the next morning to find they are completely cut off from the outside world. With no way to know what is going on outside, should they fear the nerve agent or each other?