Mark Wahlberg stars as a man who takes his family on the run when a natural disaster threatens to end civilization. For years, the earth has been the victim of mankind's "progress," and the pollution has finally built to a point that causes a global backlash. An invisible neurotoxin is released into the air making the people in Philadelphia go crazy and kill themselves. The Happening is a paranoid thrill ride through this large-scale, cataclysmic environmental crisis that turns into a struggle by mankind to overcome nature.