The narrative of Chapter 65 begins with a dark turn of events for the Tang Monk and his disciples. After being lured into a trap, the Tang Monk, Bajie, and Wu Jing find themselves bound in a "dark room" within the lair of a sinister entity. The antagonist, identifying himself as the "One-Horned Buffalo," reveals his malevolent motivation: "I also know that I'll live forever if I eat you." Despite the dire circumstances, Bajie and Wu Jing attempt to intimidate the demon by invoking the name of their formidable companion, Sun Wukong. They recount his legendary reputation, noting that "Heaven's entire army couldn't defeat him" and that even the "Jade Emperor is afraid of him." While the demon initially feigns indifference, his internal monologue reveals a deep-seated anxiety, prompting him to rely on his "special weapon"—a mysterious "metal ring around his arm."
Upon returning to the site of the former monastery, Sun Wukong discovers that the structure was merely an "illusion" crafted to ensnare his companions. Recognizing the danger, he immediately confronts the demon. The One-Horned Buffalo attempts to gaslight Wukong, labeling the pilgrims as "criminals" who "stole my valuable silk vests." In a moment of humorous vulnerability, Wukong momentarily considers the accusation against Bajie, noting, "Well, then I believe you," before ultimately prioritizing the rescue of his master. The ensuing battle showcases the raw power of the Monkey King. Wukong wields his "iron bar," an "extremely heavy" weapon, with devastating force. When the demon attempts to block a strike, he is left crying out, "Ow!" and is forced to his knees, proving that Wukong’s physical prowess remains unmatched in direct combat.
The climax of the encounter shifts drastically when the One-Horned Buffalo utilizes his hidden advantage. As Wukong presses his advantage, the demon reveals the "metal ring" he had been concealing in his sleeve. The weapon exhibits a supernatural gravitational pull, described as Wukong feeling himself "being pulled toward the ring." This artifact proves to be the Monkey King's undoing; despite his immense strength, Wukong is unable to retain his signature weapon. The text describes the iron bar being "ripped from his hands" and vanishing into the ring. This pivotal moment marks a significant turn in the chapter, as the Monkey King, usually defined by his invincibility and his "iron bar," finds himself disarmed and facing a formidable challenge that transcends mere physical strength. The One-Horned Buffalo’s reliance on this magical object suggests that the struggle for the pilgrims' freedom will require more than just Wukong’s standard martial prowess, setting the stage for a complex magical conflict.