Following the death of Emperor Charles IV, Europe is plunged into a power struggle between his sons: the weak of Bohemia and his ambitious, ruthless half-brother King Sigismund of Hungary.
While the film is inspired by real history, it takes significant creative liberties to build its narrative:
Jan Žižka (played by Ben Foster) and his band of mercenaries are hired by Lord Boresh (Michael Caine) to kidnap Lady Katherine (Sophie Lowe).