1. Castles in the Sky/Tipping the Scales
Aired: Dec 27, 2004Arthur and his friends want to build a new tree house with a famous architect...
D.W. wants to swim at a backyard pool belonging to Molly, the toughest bully in school. Can Molly and Arthur secretly be friends? Meanwhile Grandma Thora adopts a new little companion, but the neighborhood welcome is reluctant.