Transcript for Authors Matt de la Pena and Christian Robinson talk about new book
We are back with a beautiful new children's book "Milo imagines the world." It's the third collaboration by Matt de la Pena and Christian Robinson and a great reminder we have a lot more in common than we think. Will reeve has the story. Hey, will. Reporter: Hey there, George. It looks bright and fun and whimsical and it is, it is an absolutely wonderful book for kid, but "Milo imagines the world" also confronts some heavier topics that you'd be surprised to find in a children's book. But that's the point. Step inside the visionary world of a boy named milo riding a subway train, a notebook and pencil in his hand. He starts to draw the people and he's imagine not only who they are but where they're going and what their life looks like. Reporter: A disheveled man. He imagines he is a lonely man living in some sad home, maybe just a bunch of cats and rats. Reporter: Then a woman in a wedding dress. She's going to find the man of her dreams standing next to her in the grand cathedral Milo, he is an observer of the world so I wanted to put emphasis on his eyes so gave him little glasses. Reporter: These colorful stories part of new picture book, "Milo imagines the world," already an instant "The New York Times" best-seller with words by Matt de la Pena and pictures by Christian Robinson. It's gaining popularity for both its whimsical storytelling and also its hopeful social messages, including how we're all more alike than we may realize. The little boy who walks onto the train really captures milo's attention, he's got a little suit on and really clean shoes, he imagines him living in a castle and getting a horse carriage ride to his castle. He imagines him being met by a butler and maids. He's almost measuring himself up to this boy so he thinks that little boy has a wonderful incredible life that he could only dream of. Reporter: But later milo learns he is going to the same place he's going, to a prison to visit his incarcerated mother. And I think that huge surprise leads to the ultimate epiphany which is maybe I had not only his story wrong but maybe I had all of them wrong. Reporter: The lonely man now reimagined with a loving family and the woman in the wedding dress -- He reimagines maybe he didn't have it right. Maybe she was in love with a we all kind of make those quick lazy judgments. We have these defaults, right, and I think we wanted to challenge some of those stereotypes. For me it's creating those stories that I wish I had as a child. It's about connecting us to each other. Every person we meet is so complex, there's an entire story behind their face that we can't access, so if we do sort of approach each other with a more generous nature, I just think the world would be a little bit brighter. Reporter: The creators hope "Milo imagines the world" sparks imaginations and conversations in homes and communities. Almost every page has a different jumping off point to discuss a whole range of issues that affect us all at any age. George. What a rich book. Okay, wi78, thanks very much.
This transcript has been automatically generated and may not be 100% accurate.