On the first day of their cottage holiday Patrick, Jenny, and Kristen discover strange things happening in the bush around Eagle Lake. When they rescue some trapped toads, they and their friend Pete must combat the witches who had captured them. Fortunately, they meet Elg - the Eagle Lake Giant - who comes to their aid. Elg appreciates the awe and respect that these city children feel for the wild creatures of the North Country.

Over the next few weeks evil forces target the children. They must outwit witches, battle water orcs, and escape from punkchopgoons. For weapons they utilize whatever they can improvise, including water guns loaded with sea salt and the beautiful music of Mozart. On one occasion the children free a reclusive islander nicknamed The Hulk. On other occasions unexpected help arrives from a mysterious female called Ursula, or from Hughie Graye's dump truck.

Improbably, they find a trace of goodness in three young witches who may - or may not - recover and rejoin the world.

In the ten episodes of adventure and mystery, adults appear to be oblivious to the dangers, but are all them really so unaware?