Vanessa, a television reporter covering a story of a farmer attacked by his chickens, discovers that this is not an isolated incident. Travelling to Spain with her cameraman Peter, the two discover the survivors of a town wiped out by the birds thirty years ago. Meanwhile, attacks continue as a child's birthday party ends in tragedy and doves devour a poultry farmer and his wife. Vanessa soon comes to the conclusion that the birds are organizing themselves against the ecological ravages of man, but time is running out as thousands of birds launch an attack against a train Vanessa is traveling on.
Harry Walker, a former military pilot, works as a helicopter pilot and traffic reporter for a Salt Lake City radio station. One day while working he observes a bank robbery in progress and the kidnapping of a young woman who worked at the bank. Harry goes into pursuit which leads to an exciting conclusion.
At a reception given by Arthur Hilton at his Sussex home the conversation turns to the subject of danger, with Hilton recalling a case in which he was involved as a Natal police commissioner. In it there were three guilty persons, but only one of them was hanged; the other two were sentenced to long terms, vowing vengeance on Hilton. Unknown to him, the same two men are now among his guests, and are determined to have their revenge.