65 million years ago: the last dinosaurs are dying out, the mammals are beginning to take over the earth and the very first bats are learning how to fly.

Our young hero Dusk, a chiropter - a small arboreal glider - discovers an unusual ability.

The only member of his colony capable of powered flight, Dusk becomes an outcast.

But after his colony is massacred by a prowl of carnivorous felids (proto-cats), a homeless and hunted Dusk may prove to be its salvation.

Set during a dynamic evolutionary moment in earth's history, "Dusk" tells the story of the very first bat, and a colony's perilous journey to find a new home.