On December 31, 1999, four people entered a house located in the Blacklands of Texas to investigate supposed supernatural activity. They were never seen alive again. Two months later a video tape labeled with only the title "Blackwood Evil" was delivered to WBWE television in Sunrise, Texas. It chronicles the last hours in the lives of the four investigators as unseen demons take them one by one.
When a street-smart FBI agent is sent to Georgia to protect a beautiful single mother and her son from an escaped convict, he is forced to impersonate a crass Southern granny known as Big Momma in order to remain incognito.
Gracie Hart is a tough-as-nails FBI officer. When her office receives a letter from a terrorist going by the alias "The Citizen", they figure out that he's planning his next act at the Miss America beauty pageant.