period. At the start of the chronicle, the author introduces a series of diplomatic negotiations involving the Infante D. Pedro and the ambassadors from Castile concerning Queen D. Lianor. The chapters depict the rising tensions over her status and the potentially destructive consequences of a conflict over her claim to govern. As the plot unfolds, these diplomatic missions reveal deeper personal connections and emotional stakes among royal family members, highlighting both the political machinations and the personal relationships that complicate the governance of the realm. In particular, the opening also hints at the tragic fate of key figures, preparing the reader for a narrative rich in historical drama and intrigue. (This is an automatically generated summary.)