The volume presents a year-by-year chronicle of Italian affairs, compiling political events, local conflicts, military campaigns, municipal and ecclesiastical developments, and notable incidents. Entries synthesize reports from earlier chronicles, official records, and eyewitness accounts, often noting conflicting versions and offering brief commentary. Focus ranges from urban power struggles and alliances to sieges, legal and administrative actions, and cultural or clerical matters, with attention to regional actors and shifting loyalties. The tone is documentary and scholarly, aiming to preserve sequence and sources for readers seeking a continuous narrative of past events rather than a literary plot.