In Dumbarton, Scotland, a journalist uncovers a sixty-year history of dogs jumping to their death from a fifteen meter bridge. Could something be luring the dogs to the other side? In Kerala, India, villagers hear a loud sonic boom one morning and wake to see blood red rain falling from the sky. Is it just desert dust or could it be evidence of extra-terrestrial life? Lions living in the Serengeti National Park in Tanzania are exhibiting disturbing behaviour: violent seizures and battles to the death with other lions. As the death toll climbs, will investigators identify the cause before the great beasts are pushed to the brink?