The feast for the newlywed couple, Juanito Peláez and Paulita Gómez, commences at Don Timoteo's house. Guests from various social strata, including prominent figures like Padre Salvi and Padre Irene, attend. Outside, Basilio observes the festivities with growing apprehension, sensing an impending disaster. He initially contemplates warning the guests but reconsiders upon seeing Padre Salvi and Padre Irene.

Basilio spots Simoun carrying a lamp, whose strange demeanor suggests he is also hesitant about going to the feast. Inside, a note is discovered with the ominous message "Mane Thecel Phares" and the signature of Juan Crisostomo Ibarra, startling everyone, especially Padre Salvi. The Captain General's attempt to call for guards is futile.

Don Custodio interprets the note as a warning of impending death by poisoning. Suddenly, a shadow snatches the lamp, throws it into the river, and then jumps in itself. This shadow is later revealed to be Isagani, who, despite his heartbreak over Paulita, saves the guests from the lamp, which contained a dynamite, preventing a catastrophic explosion planned by Simoun.

The important characters in this chapter include Don Timoteo Peláez (host of the feast), Juanito Peláez and Paulita Gómez (the newlyweds), Simoun (the jeweler with the dynamite-filled lamp), Basilio (the student who senses danger), Isagani (Paulita's former lover who heroically saves the guests), Padre Salvi and Padre Irene (priests present at the feast), and the Captain General (the highest official attending).

The setting of this chapter is Captain Tiago's house, where the lavish feast for the newlyweds is held. Key vocabulary includes: 'Piging' (feast), 'Lampara' (lamp), 'Azotea' (terrace), 'Dinamita' (dynamite), and 'Sulyap' (glance).

The chapter conveys several important lessons: wealth and power do not guarantee safety, as danger can arise from unexpected places; personal anger and revenge can override goodness, endangering innocents; and love and sacrifice can drive individuals to extraordinary acts of heroism, even at great personal risk.