An Englishman visiting Russian Poland for sport is mistaken for a suspect after police uncover papers linking a secret society, and he becomes enmeshed in a wider plot involving patriotic conspirators, arrests, imprisonment, espionage, and a complicated attachment to a woman named Volna Drakona. Subsequent episodes follow surveillance, raids on revolutionary cells, undercover operations in Warsaw, betrayals and reversals, an elaborate scheme to aid fugitives, a daring flight through hostile streets, and the aftermath of political violence, combining suspenseful action with themes of loyalty, sacrifice, and clandestine resistance.