Jack, Zack, and Caspar build a castle fort, then spend a day fighting dragons and beasts, but at day's end giants carry away first Sir Zack, then Caspar, and King Jack is left to face night creatures alone. Interest Level: K-3 Reading Level: 2.5 ATOS Book Level: 2.6 AR Interest Level: LG AR Points: .5 AR Quiz: 146100EN.