Animated comedy sequel featuring the voice talents of Alec Baldwin, James Marsden and Amy Sedaris. Now all grown up, the Templeton brothers have drifted apart. Tim (Marsden) is happily married with two daughters while his little brother Ted (Baldwin) is a work-obsessed, successful CEO. However, when the brothers learn that Tim´s infant daughter Tina (Sedaris) is an undercover executive of BabyCorp, they must turn back into children and work together to stop Dr Erwin Armstrong (Jeff Goldblum) from carrying out his evil plan to rid the world of bossy parents.