There are no grown-ups in "The Peanuts Movie." More importantly, there are no villains or evil schemes. There's a gentle, insecure little boy named Charlie Brown, his beagle and a gaggle of friends — that's about it.

Why this micro-universe inhabited by small children and a pet has such an enduring charm has been the fodder for many popular culture commentaries, especially since Charles M. Schulz — the creator of the original Peanuts comic strip — passed away in 2008.

"My dad was a very hands-on type of father," says Craig Schulz. "He never let busyness get in the way of his family life."