Taking place is the Diet to elect a new King of which Prince Bogusław is a candidate and Zagłoba is determined to raise support against the traitor.

Michael's sister, Mrs Makovetski, visits Warsaw and is invited to stay with Krystina Drohoyovski and Barbara Yezorkovski, of whom her husband is their guardian.

Adam Novoveski, a young cavalier, arrives on the scene and pays court to Basia but she has nothing of it and rejects his eventual marriage proposal.

Summer of 1671 finds Michael in Sokol, Basia's paternal villages, happily married and running the estate as efficiently as he does his troops.

Mrs Boski arrives at Hreptyoff with her daughter, Zosia, journeying to the Khan to pay her husband's ransom and Michael offers to send letters to Pyotrovich to give to Rushchyts at Rashkoff.

Mr Novoveski and his daughter, Eva, are also with the party going to Rashkoff to be reunited with Adam, who ran away from the family home to join the army.

Azya reveals his plan—a treacherous one—to Bogush to supposedly bring the Lithuanian Tatars over to the hetman's cause to fight against the Turk but in fact to use these troops to attack the unsuspecting Poles.

On the journey Azya commands Halim to occupy Roshkoff and attempts to seize Basia who strikes him in the face with the ivory butt of her pistol.

Gorzenski, the commandant at Mohiloff, intercepts Azya's orders to his Tartars and kills the Mazovian infantry as well as sending a message to Yampol, thus saving it from destruction.

Individual skirmishes now take place outside Kamenyets and Michael, riding on his Wallachian bay, kills Hamdi, a renowned pagan warrior.

The Vizir, Sultan and Khan all arrive on the field of battle and Michael is infuriated by a letter sent via an envoy, Yuritsa, on behalf of the town council seeking an armistice.

As the Polish troops leave the castle, a mine explodes and kills Colonel Michael Wołodyjowski, the Hector of Kamenyets and first soldier of the Commonwealth.

Father Kaminski conducts the funeral service and Sobieski makes a grand entrance and kneels at the catafalque to pray for his soul.

The grand hetman, assisted by the voevode of Rus, sends in his hussars and the Tartar janissaries—led by Hussein, the white-bearded Kiaya, "Lion of God"—are finally vanquished on the Polish lances, many of them dying in a rugged ravine at the opposite side of their camp.

Cries of “Vivat Johannes victor!” ring out in the captured pagan camp of Hussein Pasha as a Thanksgiving Mass is celebrated by Sobieski and his victorious army.