Bug follows the tragic and lonely life of a waitress, Agnes, that has "hermitized" herself in a sleazy hotel in order to hide from an abusive ex-husband and the memory of a long lost child. It isn’t until she meets a quiet drifter, Peter, that she begins opening up to the idea of a new life with a new man. Sadly, that new life isn’t exactly what she hoped for. On a drug-fueled binge, Peter invites Agnes into his paranoid fantasy of parasitic bugs and government conspiracies. As the audience intrudes upon this world they also begin questioning reality. Could those theories possibly be real? In a very intense final scene you see how far Peter and Agnes are willing to take their psychological bond.