Becoming an official student of the World Express, Flynn hoped that she would finally be able to find her brother Jonte, who disappeared on the train several years ago. But it turned out that finding his traces was not at all easy. Students and teachers stubbornly refuse to talk about him. But the strangest thing is that at night inexplicable things begin to happen on the train: eerie shadows appear in the corridors, one of the students sees a monster, and Flynn herself constantly receives hidden danger signals from the train. So what's going on on the World Express? Who is trying to harm him and his passengers? And most importantly, how is all this connected to the Yonte secret? The second book in the series.