Justin Moore witnesses a crime he believes he might have prevented. The incident undermines his mental health, and he moves into a small rundown apartment in San Diego where he ponders his life's mission. One day he spots a note advertising a position as a driver for an elderly man who identifies himself only as "A. C., an accountant for an international business firm." When A. C. asks to be taken to places deep in the bowels of the city, Justin becomes increasingly suspicious that his new employer may be involved in sinister illegal activities. Others question whether Justin may be trying to purge his own guilty conscience.