The video is about an animated movie namely The Boss Baby which circles around a baby and his brother.
The boss baby (Alec Baldwin) arrives at Tim's house in a taxi wearing a suit and carrying a briefcase. Yep! That's right. The inevitable sibling rivalry begins and there is twist in the story when Tim realizes that the baby can talk. What happens next is extraordinary and the trailer gives a wonderful indication about the future endeavors of both these kids. This is a must watch clip.