How would world history have changed if, at the beginning of the 20th century, young Adolf Hitler had gone to America on the Titanic, making its first and last voyage? Two employees of the Russian Institute of Historical Research, Savva Karataev and Vadim Nizhegorodsky, after another move to past, using a time machine, they get stuck in Europe shortly before the start of the First World War. At first, they try to build capital by placing large bets on race winners and casino winning numbers that they know in advance, and then they begin to become increasingly involved in world politics and famous historical events. However, it soon becomes clear that interfering with the fabric of the past can lead to the most catastrophic consequences - especially when Nazi hordes are about to begin marching in Western Europe...