This volume continues a civil history of the Kingdom of Naples, tracing power struggles after an imperial death as Manfredi assumes authority, suppresses rebellions across Puglia and Terra di Lavoro, and besieges Naples; it recounts papal efforts under Innocent IV to assert feudal claims and to rally support, and the arrival of Conrad of Germany with German forces and Ghibelline allies, shifting the military and political balance. The narrative relies on contemporary chronicles to detail campaigns, sieges, local loyalties, and negotiations, and emphasizes the interplay of dynastic succession, papal intervention, and regional resistance.