As the fifth entry in the series, readers get exactly what they expect from these books.
This time, besides extensive accounts of the in-fights within Hungary between Ulászló and Erzsébet for the throne, the main crux of the plot is centered around one of the most glorious, but lesser known battles of Hungarian history, the battle of Nándorfehérvár. Not the very famous later one, but the one fought in the summer of 1440. While Mór depicts Hunyadi as a key player in this battle, he admits that this is not based on historical sources, and the true hero of the battle was Thallóczy of the Knights Templar, whose genius cost the Ottomans dearly.
Another main battle of the plot is the battle of Vaskapu, in which the sheer desire for revenge, under Hunyadi's leadership, fuelled the common people of Transylvania to obliterate a rather significant Turkish pillaging army, before they could escape home with their loot.
As one expects, blood and gore galore, as a book of the topic should be.