In a dark future America that has devolved into unending civil wars, orphans Mahlia and Mouse barely escape the war-torn lands of the Drowned Cities, but their fragile safety is soon threatened and Mahlia will have to risk everything if she is to save Mouse, as he once saved her. Companion to Ship Breaker. Interest Level: YA ATOS Book Level: 4.6 AR Interest Level: UG AR Points: 13 AR Quiz: 151051EN Reading Counts Level: 5.3 Reading Counts Points: 22 Lexile Measure: 690 Lexile Code: HL (High-Low).