Later, Baby makes Tim suck a special pacifier that allows them to see Baby Corp, where babies come from. Most babies go to families, but those unresponsive to tickling are sent to management, where they are given a special baby formula that allows them to think and behave as adults while remaining young forever. Baby also explains he's on a special mission to discover why the world's love of babies is being threatened lately by love of puppies, and came to the Templetons as Tim's parents work for Puppy Co. Once his mission is done, he will leave. However, the boys overhear Baby's boss threatening to fire him, should he fail. As that would mean Baby would have to stay with the Templetons and grow up, Tim and Baby agree to work together to prevent this from happening.
Upon reading the original book on which the film is based McGrath felt a connection to it, as he had an older brother and felt like "the boss baby of the family". In keeping with that theme he stated, in an interview with Den of Geek, that "My personal goal with this was to watch this movie with my brother, and to see how it affected him!", which resulted in McGrath's brother being moved to tears by the completed film.
Neil Genzlinger of The New York Times praised Baldwin and the adult humor, saying: "The contrast between the helpless-infant stage of life and corporate-speak is funny but fairly high-concept for a kiddie movie, and the plot grows denser as it goes along and the baby and Tim reluctantly join forces to stop a conspiracy by which puppies would corner all the love in the world." 2b1af7f3a8