The story focuses on three strangers, identified by the initials H, X, and Z, each of whom has their own mission that is gradually revealed. Chapter by chapter, the film depicts the locations, situations, and characters’ reactions to the circumstances and events in which they are either active participants or mere witnesses. The entire story is narrated through an off-screen commentary, with voices provided by Daniel Hendler, Juan Minujin, and Verónica Llinás, gradually unveiling the motivations, relationships, and secrets of each of the strangers.