As El Salvador returns to peace after more than a decade of civil war, Eduardo Sosa, an unemployed sociologist, becomes fascinated by a homeless man who lives in a beat-up yellow Chevrolet parked across the street from his sister's apartment. An unexpected turn of events causes Sosa to assume the other man's identity. When he becomes the driver of the mysterious yellow Chevrolet, Sosa discovers that it is home to four poisonous snakes. With the snakes...