Sara is the temperamental, quick-to-judge daughter of an upstanding Protestant family in the countryside of Cologne. To her, the war has always seemed a far-away nuisance. That is, until a warm night in the summer of 1944, when a jarring dose of reality is dumped upon their doorstep: young, fraught, and Jewish. Enter Benjamin Jastrow, the child of an old family friend and the new and indefinite resident of the Fleischers' attic. He is violently shy, coping with various stages of post-traumatic stress, and can hardly form a sentence without stammering—a nearly perfect opposite of the blustering Sara, who positively abhors his presence in her home. But for better or worse, they are the most important people in each others lives, and everything they thought they understood of their world will soon change forever.

Han habido más de veinte chicas, que se han quejado de que después de conocer a un guapo chico, y haber intimado con él, él les dejo una nota diciendo: Bienvenida a nuestro club del sida. Y aunque no sea del todo cierto, el miedo mata. Sin embargo alguien quiere venganza, y se hace llamar: "El Vengador" Tengan por seguro que lo conseguirá.