Premise
Tim (James Marsden) and his Boss Baby little bro Ted (Alec Baldwin) - have become adults and drifted away from each other. Tim is now a married dad. Ted is a hedge fund CEO. But a new boss baby with a cutting-edge approach and a can-do attitude is about to bring them together again … and inspire a new family business. Tim and his super-mom wife Carol (Eva Longoria) live in the suburbs with their super-smart 7-year-old daughter Tabitha (Ariana Greenblatt), and super-cute new infant Tina (Amy Sedaris). Tabitha, who’s at the top of her class at the prestigious Acorn Center for Advanced Childhood, idolizes her Uncle Ted and wants to become like him, but Tim worries that she’s working too hard and is missing out on a normal childhood. When baby Tina reveals that she’s—ta-da!—a top secret agent for BabyCorp on a mission to uncover the dark secrets behind Tabitha’s school and its mysterious founder, Dr. Armstrong (Jeff Goldblum), it will reunite the Templeton brothers in unexpected ways, leading them to re-evaluate the meaning of family and discover what truly matters.

— DreamWorks Animation