It might seem that faceless beings no longer threaten humankind—but is that really true? Mark refuses to believe everything is over and tries to stand up to his father, who is a secret agent of the “A-Sync” company. When Knut disappears, the boy is forced to set out again on a dangerous journey through the grim dimension of the Backstage to save his family. But even in Reality, the enemies don’t leave him alone. A thrilling race against time has begun…