New York, 1980: Three complete strangers—Bobby Shafran, Eddy Galland, and David Kellman—make the astounding discovery that they are identical triplets. Separated at birth, adopted, and raised by three different families, the 19-year-olds are reunited by chance. Their story sets the tabloids on fire, and the triplets suddenly become famous around the world. The brothers forge a relationship and become fast friends. They move in together in a swinging bachelor pad and open a restaurant that skyrockets to success. The toast of Manhattan, the triplets are living the high life. But their fairy-tale reunion sets off a chain of events that ultimately unearths an extraordinary and sinister secret that could answer controversial questions at the heart of human behavior.