Traveling to the commercial city-state Argyros, Mahmut attempts to get permission from Rohmonov, one of the "Three Great Merchants" who rules the city, to conduct trade with the eastern part Rumeliana. However, Rohmonov denies Mahmut, as getting involved in politics goes against the merchant law. At the market, Mahmut and co. see Niki Al-Bahram, a young girl whose merchant father recently passed away and has inherited his trading license, being dismissed by her father's former workers and business partners.

As Mahmut and co. enter the Cuore di Rumeliana region, they quickly learn that all 34 city-states lack the military power to defend themselves against Balt-Rhein and are annoyed by their seemingly complacent attitude. After learning that they must get the Republic of Florence's permission to allow the Turkish army passage through their territory, the group heads there and sets up a meeting with Gonfaloniere Caterina di Rossi, the leader of Florence and Süleyman's former lover.

As the siege beings, the Balt-Rhein army is short on food supplies, causing Pineau to take a large platoon of soldiers to steal from the more vulnerable Turkish army. Wanting to avoid conflict, Halil and his army choose to maintain a two-day distance from the Imperial army, since the latter is mostly made of infantry. After successfully avoiding conflict for ten days, the Imperial army manages to catch up to them after Military Supervisor, Lily Kokoschka, intercepts their marching routes on the eleventh day and orders the army to use river rafts to close the distance gap.

As the fighting begins, the Balt-Rhein army learns that the Lince mercenaries has a large force within Espada, contradicting Lily's initial calculation. Greatly outmatched, the Imperial army are quickly destroyed, with Mahmut personally beheading Pineau, and the rest of the high-ranking personnel are killed. As the spoils and prisoners are divided among the allies, Mahmut and the Turkish army choose to rest before returning to Chielo. Meanwhile, Blanca and Vasco continue to travel to the Türkiye Stratocracy in spite of the waging battle.