David Wozniak (Vince Vaughn) has always led a simple life. A delivery driver for his familyâs meat company, he is seemingly content existing in a state of perpetual mediocrity. While David has a good heart, charming everyone he comes in contact with, he is immature, unfocused, in serious debt and in desperate need of some sense of direction in his life. But when he finds out he is the biological father of 533 children and 142 of them are suing to learn his identity, everything changes, and David decides he wants to do the right thing and for once, be held accountable for his actions.
Eager to learn more about some of his newly found progeny, he tracks them down and begins looking out for them. Rather unexpectedly he becomes involved with these kids emotionally, and for the first time in his life understands how good it feels to put the interests of others ahead of his own. David wants to see them excel in life, and like a covert guardian angel he offers advice when warranted, encouragement when needed or a shoulder to cry on when sought, and begins to grasp all the precious things in life he has been missing. At the same time, Davidâs girlfriend, Emma (Cobie Smulders), enlightens him with news of her pregnancy, but knowing David, her expectations are minimal. Davidâs recent trials and tribulations, however, have helped him grow in ways he never imagined possible, and he finally understands he has been given a purpose in life, and this time he wonât let anyone down, least of all, his children.