Finally, after a decade of trying to charm his way into Jack's good books - including providing him with two grandchildren - Greg has finally been welcomed into the Byrnes' circle of trust.
That is until he is forced to take a second job in a drug company to make ends meet.
When the Byrnes and the Fockers descend on Greg and his wife Pam for the twin's birthday party, Jack's suspicions about the moonlighting nurse come screaming back.
Cue misunderstandings, covert missions and hilarious farce as Greg has to jump through hoops to prove once again that he is worthy of Jakes trust and the future patriarch of the entire clan.
Starring: Ben Stiller, Robert De Niro, Owen Wilson