After swimming in a lost taiga lake, a St. Petersburg girl finds herself in the era of the Russian Empire on the eve of the First World War. A terrible world, magical, deadly and unpredictable, surrounds her on the streets of her hometown. Monsters, in human form - Trojans, changing history in their own whimsical way, inhabit the new world. And in order to return home, the heroine will have to fight not only with hosts of monsters, but also overcome her own fear...