ThestoryissetonMidsummer’sEve,whenthemysteriousmilitaryunittakesoverapeacefulseasidetown.Alldatanetworksaredisrupted,andtheregionfallssilent.Themotivesandtheoriginoftheenemyremainshroudedinmystery,withthewholeofEuropebeingtakenbysurpriseandundershock.Localresidentsturnintohostages,including21-year-oldAnnikaBerg,whoisdoinghermilitaryservice.Inseconds,hermilitaryexerciseturnsintoarealcrisis,involvingactualcasualties.Isthisanisolatedincident,orthefirststeptopushtheworldintoanewglobalconflict?