Sy works in photo processing. His favorite customers are the Yorkin family. Sy dotes on the Yorkins whenever they drop off film to be processed and they are indulgent of Sy's attentions. What the Yorkins don't know is Sy has been obsessively making copies of their photos, imagining himself to be "Uncle Sy," a member of the family. Sy's tenuous hold on reality begins to collapse when he develops a roll of film brought in by a new customer that suggests infidelity and the notion that his ideal family may be falling apart is troubling for Sy.