The film follows a passenger train traveling from Belgrade in Serbia to Bar in Montenegro. The train is stopped by armed Serbian paramilitary forces at a small station in Štrpci in Bosnia and Herzegovina. Having received a tip off that there are Muslim passengers on the train, they found 19 of them, took them off the train, and executed them shortly after the train departed. About 500 passengers witnessed the event, but no one dared to stand up to them, except for one man, a retired military officer Tomo Buzov, on his way to visit his son.