The film opens in New York. People start to get confused in Central Park, repeating their words, standing still and sometimes walking backwards. We hear a few screams. A woman (Alison Folland) reading on a bench takes her silver chopstick-style hair pin out of her hair and stabs herself in the neck with it. Meanwhile on a building site, workers on the ground are chatting when all of a sudden a body falls. Panicked, thinking the worker just fell off the roof by mistake, they rush over to his broken body. While they looked over the body, another thud, another worker. They look at him confused; one is possible, two is unlikely, and when the third falls, it seems impossible. Then yet another and another, crashing to earth. When they look up they see many running off the edge, apparently by their own will, looking completely calm, and sure of their actions.