In a 1988 prologue, David Wozniak is at a Quebec sperm bank making a donation. Twenty-three years later, in 2011, he is a hapless deliveryman for his family's butcher shop, pursued by thugs whom he owes $80,000. His girlfriend Valérie is pregnant with his child. One day, David returns from work to find a lawyer from the sperm bank who tells him he has fathered 533 children. Of those, 142 have joined a class action lawsuit to force the fertility clinic to reveal the identity of "Starbuck", the pseudonym he used as a sperm donor.