With the coalition beating back Sweden, The Commonwealth is now finally able to fully concentrate on the Russian threat to the East. Khmelnytsky, who started the Cossack rebellion 9 years ago, has died, throwing the Cossack hosts into disarray as they descend into civil war. Meanwhile John Casimir tries to reform the nation internally in hopes of tackling the causes of the Deluge crisis, while Grand Marshall Lubomirski tries to defend the constitution that binds The Commonwealth together.