A strange planet named Tin is either a sump, or an incubator. Incomprehensible “barrels” descending from the sky on huge parachutes. And inside the iron buildings, passengers who have partially lost their memory sit in trays. None of them can say why they are here, for what and why. And not everyone survives after descending along a ballistic trajectory. A group of special people from the Pyatisotka garrison, professionally rescuing the rare lucky ones... This is the world. A world of steppes and old iron, where everyone is waiting for the Messenger and the Instructions, in the hope that the communities will finally be shown the goal and the path.