Catfish starts out with New York photographer Nev Schulman, filmmaker brother Ariel and friend Henry making a film about an 8 year-old girl named Abby from Michigan, who painted an immaculate picture of one of Nev's photographs. The painting is mailed to Nev, and soon a friendship is born. Nev starts talking to Abby's mother, Angela, and her half-sister Megan. They all have Facebook pages, and soon Nev begins Facebook relationships with all three. His friendship with Megan, a pretty blonde twenty-something, escalates into sexually charged exchanges, and he starts to really care for her. What happens next is a sheer surprise and this funny, clever and lovable little documentary becomes a fascinating, breathtaking, heartbreaking, edge-of-your-seat look at human nature in our digital age.