It's the holidays and the Darvils have come to visit in the city. With the change of scenery and the cold weather outside, the children have to find something other than their normal adventures on the farm to keep themselves busy.

When they discover that pets around the neighbourhood have been disappearing under mysterious circumstances, the children form Drifter's Detective Agency and are soon faced with the disappearance of a pair of the world's most endangered birds, the Spix's Macaw.

Who is Robert keeping tabs on in his notebook? What are the Price twins up to and what are they hiding in their shed? Where did Annie get a ninja outfit? Join the children in the third installment of The Adventure Series and find out for yourself.