The idyllic Danish town of Sorgenfir is enjoying a beautiful summer, and the Johansson family is feeling great. Their neighbors are friendly, the weather is perfect, and the cute new girl who’s moved in across the street has teenager Gustav’s eye. But young love isn’t the only thing bubbling beneath the surface in Bo Mikkelsen’s striking debut film—a virulent outbreak soon sweeps the town. Military men in Hazmat suits force everyone indoors and information is locked down. From what the Johanssons can see through their covered-up windows, the townspeople are changing, as the mysterious virus drives them mad, and turns them violent. Trapped in their home, the Johannsons face a deadly—and all too real—fight for survival.