At Sydney's Royal Prince Albert Zoo, fear is mounting. First a curator is found dead in a giraffe enclosure, then three endangered animals - part of a controversial shipment from Burma - are brutally slaughtered.
TV Producer Nikiya Adams arrives at the zoo to research a new British series and is instantly plunged into a web of danger. Ten years ago she fell in love with the zoo's director, Dr James Rivers - but now the pair must put their feelings aside to face deadly intrigue and an unknown killer.
Trapped in the zoo at night, they find themselves being hunted - and Darwin's 'survival of the fittest' takes on a terrible meaning.