Doug Jones, from Pan's Labyrinth, Hellboy and Crimson Peak, stars as Eugene - the last man alive. He has only one friend - a withering Olive tree that is surrounded by pesky flies. Their companionship has stood the test of time and decay but as their only source of water, clogs up and grinds to a stop, Eugene must meticulously clean and rebuild the aqueduct - racing to save life on Earth as we know it.