Wait, are we talking about the novel or the later sequel, 'El Filibusterismo'? Because the plot continues and changes context. In 'Noli,' Ibarra is the disillusioned reformer. In 'Fili,' he returns as the vengeful Simoun. So the 'complete' plot of 'Noli' alone ends with Ibarra's apparent death, Elias's sacrifice, Maria Clara's imprisonment in the convent, and Sisa's death. It's a dark, unresolved ending on purpose—Rizal wasn't writing a feel-good story. The 'plot' is the systematic destruction of hope, setting the stage for the more radical sequel.