Kids everywhere want to ride bikes... even kids on Planet Klynia When twins Hazel and Henry move to Planet Klynia, they find a very different world. As they explore on their bicycles, they see that the local people, called Zonns, never smile. And the twins are the only ones on the whole planet who have bikes After befriending a Zonn boy named Durst, the twins realize that people everywhere are not so different after all. Durst...