The New York office of the FBI brings to bear all their talents, intellect and technical expertise on major cases in order to keep their city and the country safe.

A deadly patchwork of destructive cyclones is on an apocalyptic path of convergence at a populated Midwest city center. There, the twisters will merge into one mega tornado that threatens to obliterate the cities for hundreds of miles around.

After the death of her best friend, Liz attends Julie's funeral gathering where strange events begin to occur.