These beautiful dragons who have been co-designed with Ron Rodecker, famous dragon artist, teach children how to get along. My favorite episode is #133A "Not Separated At Birth" In this one Zak and Wheezie disagree with each other so much that they separate- with the help of magic crystals.
My only vice: Throughout season 3, there was a recurring theme that was repeated throughout several episodes- following directions. Guess the writers got sick and tired of people not following directions.
The show is set in Dragonland, a continent of some size on a different world, possibly a different dimension. [the writers are careful not to ruin the backplot] Emmy and Max find a dragon scale in their new house's playroom, which transports them to this peaceful magical place, and they've been going there since.