The film takes us into the nearly impassable Darkwoods in Canada, with its ecosystems of old growth valleys and alpine meadows. It's a wonderful part of British Columbia with unique flora and fauna. These remote mountain ranges are home to rare mountain caribou, endangered bats, grizzly bears, wolves, and unique birds.

Cuckoos are brood parasites who they lay their eggs in the nests of other bird species, a clever trick that spares the rearing and feeding of their own offspring. Why do other parent birds let this happen? Are they too stupid? Too inept? Or simply clueless? None of the above!