This is a funny movie that all parents can relate to on how difficult it can be to raise a baby, or at least that's what 3 crooks have learned the hard way after kidnapping a baby and demanding 10 million dollars for the safe return of a mother's baby. Well, this wasn't any ordinary baby, as it was born with a very wealthy and rich family. They really loved their child and took advantage of every opportunity to have their baby photographed and acknowledged in all the media. They hire a professional baby photography company to come to their mansion to photograph their baby. But a gang of crooks find out about the mansion and their millions as well as their little darling baby, whom they plan on kidnapping. It wasn't easy, but to get to the baby, they needed to pose as baby photographers in order to get close enough to the baby to kidnap him. So they captured the original guys scheduled to photo the baby, and took their place. While the eyes of the crooks were on the mansion's goods, the real money was within the baby. So they put their plan into action, by getting the mother to leave the room, so they can be alone, as they grab the baby and make their get away, leaving only a small memo behind demanding millions of dollars from them for the safe return of their baby.
So with the crooks kidnapping the baby, and settling in their hideout in NYC, they already started to experience problems in baby care. You may notice that the leader of the crooks as the voice of Fat Tony from the Simpsons. The other guys knew nothing on caring for a baby and faced tons of problems in diapering and feeding and clothing him. The baby however is more than amused with his all time favorite book titled "Baby's Day Out", as the book tells the exciting adventures a baby has while exploring the big city. Getting inspired by his "Boo-Boo", as he called his book, he decides to go out on an adventure and do the same things and go the same places the baby did in the book. With the baby crawling out of the crooks sight, they do everything they can to try and get the baby back, but it seems like the baby is one crawl ahead of the crooks, as they become accident prone and suffer various dangerous injuries while trying to reach out and get the baby.
You wouldn't believe on where that baby crawls to, and how he manages to outsmart those crooks. He manages to crawl into a lady's shopping bag and gets a ride in a taxi cab, catches a public bus to get to the zoo. The crooks really get aggravated, and jealous as somehow with baby luck, he manages to always get away from them, and they get all the lumps. In one scene, the baby manages to cross a busy street to get to the zoo, and he just sat there about half way, as a huge truck just rolls under him, and the baby doesn't get hurt, but the crooks get their feet run over by huge trucks and almost got run over while frantically crossing the busy street. Meanwhile in the zoo, the crooks search for the baby gets easier, as they follow the baby's crawl tracks to the inside of the monkey house. While in there, they find that their million dollar baby is inside the cage of an 800 pound gorilla, whom has taken him as his own son. It was then that each of the cooks took their caution and attempted to distract the gorilla while they tried to slowly get the baby. But the gorilla was very protective of his new friend, and tossed one of the crooks into a monkey cage across the room, and cause other bodily damages. With the baby deciding to leave, he then takes a stroll into the park, and the crooks finally found their opportunity to grab the kid and walk off, but a few policemen were in the area and questioned the guys about a missing baby.
To prevent suspicion, the boss of the crooks placed the baby into his lap and covered him with their jackets to look innocent. It wasn't easy, as the baby got hold of the crooks lighter and managed to light it up and set fire to the head crooks pants. The heat was rising and it was very difficult to convince the cops that they know nothing about a missing baby. It was then that the baby had managed to crawl out of the crooks grasp, and just when the cops had left the scene, the head crooks front end of his pants burst into flames (which a lot of women would laugh at, but all men would understand the pain he's in), as one of the crooks begins to put out the fire by stomping it out. With all this happening, and the crooks getting severely beaten, while attempting to get the baby, they wonder if it's even worth it. Meanwhile the parents are in frantic search for their lost baby, and miraculously find him, but he refuses to go home without his "Boo-Boo". The poor crooks were inside their apartment with their stolen goods and as the head boss claimed that he will never have kids, I one of them joked that you won't have to worry about having any kids, considering the only tree in your forest has been burnt to a crisp. It was then that not only was the baby after his book, he was also pointing out where the guys who kidnapped him was. In all, they surrendered and tossed the book out the window. It's a movie like this that is comedic, but also a tragedy, and in my opinion.
It looks like the baby really took care of those crooks when he went to the construction site. Amazingly that the workers didn't see him there, and that the baby managed to get around the construction site without getting hurt, especially from hundreds of feet up from the ground.