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 the two discover the survivors of a town wiped out by birds 30 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 attacks are organised. The birds are defending themselves from the ravages of man, but time is running out as the birds launch an attack against the train Vanessa is travelling on...