LondonschoolgirlHettiehearsthewhispersandseestheworrycreepingacrossherparents’faces.Shewatchesasthewindowsinherhomeareblackedout.Shehelpsherdadbuildabombshelter.Shelearnshowtowearagasmask.War,ledbyAdolfHitler,isstompingitsfeetatGreatBritain’sdoorstep,andHettieknowsonlyonethingforcertain:Whenthebombscome,itwilltakeallthecourageshehastobebraveandsurvive.