David Wozniak is an affable underachiever who finds out he's fathered 533 children through anonymous donations to a fertility clinic 20 years ago. Now he must decide whether or not to come forward when 142 of them file a lawsuit to reveal his identity.
He is played by Vince Vaughn.
David Wozniak is a hapless deliveryman for his family's butcher shop in New York City, pursued by thugs to whom he owes $80,000. His girlfriend Emma is pregnant with his child. One day, David returns from work to find a lawyer representing a sperm bank (where he gave 693 donations and earned a sum of $24,255 during his student years) who tells him he had fathered 533 children. Of those, 142 have joined a class action lawsuit to force the fertility clinic to reveal the identity of "Starbuck", the aliashe had used.
David's friend and lawyer Brett represents him as he tries to keep the records sealed. He provides David with profiles of each party to the lawsuit: David stalks them, finding moments for random acts of kindness. David considers identifying himself; but, after the thugs assault his father, he agrees with his lawyer to counter-sue the sperm bank for punitive damages. He wins the lawsuit, receives $200,000, and keeps his identity a secret.
David has regrets and thinks about revealing his identity. However, if he chooses to do so, he would lose the $200,000 that he won in the countersuit. He reveals to his father that he is Starbuck. His father decides to pay off David's debt. David finally reveals his identity on Facebook. He goes to Emma's house and finds that she is going into premature labor. At the hospital, his baby is born, he proposes to Emma, and many of the children show up to see him.