OnherfinalcombatmissionacrosstheruggedmountainsofAfghanistan,RoyalAirForcefighterpilotLt.KateSinclairsjetisshotdownoveroneofthemostdangerousrebelstrongholds.Wheninsurgentscomeafterheratthecrashsite,shefindsrefugeinalongsinceabandonedundergroundbunker.AftertrackingSinclairintothedepthsofthebunker,theinsurgentsaccidentall...