Big-game hunter Sanger Rainsford and his friend Whitney are traveling by ship to the Amazon rainforest for a jaguar hunt. After a discussion about the nearby Ship-Trap Island, which has an evil reputation among sailors, Whitney goes to bed while Rainsford stays on deck to smoke his pipe. Hearing gunshots in the distance, he rushes to the rail for a better look and accidentally falls overboard. Rainsford swims to Ship-Trap and finds an opulent chateau inhabited by two Cossacks: the owner, General Zaroff, and his gigantic deaf-mute servant, Ivan.[10]
Zaroff, another big-game hunter, knows of Rainsford from his published account of hunting snow leopards in Tibet. Over dinner, he explains that although he has been hunting animals since he was a boy, he has decided that killing big game has become boring for him. After escaping the Russian Revolution, he purchased Ship-Trap, built a home for himself, and rigged the island with lights to lure passing ships into the jagged rocks that surround it. He takes the survivors captive and hunts them for sport, giving them food, clothing, a knife, and a three-hour head start, and using only a small-caliber pistol for himself. Any captives who can elude Zaroff, Ivan, and a pack of hunting dogs for three days are set free; to date, though, Zaroff has never lost a hunt. Captives are offered a choice between being hunted or turned over to Ivan, who once served as official knouter for the Great White Czar. Rainsford denounces the hunt as barbarism, but Zaroff replies by claiming that "life is for the strong." Zaroff is enthused to have another world-class hunter as a companion and, at lunch the next day, offers to take Rainsford along with him on his next hunt. When Rainsford staunchly refuses and demands to leave the island, Zaroff decides to hunt him instead. Rainsford reluctantly accepts the challenge and receives his equipment from Ivan.
During his head start, Rainsford lays an intricate trail in the forest and then climbs a tree. Zaroff finds him easily, but decides to toy with him, standing under the tree and smoking a cigarette before abruptly departing. After the failed attempt at eluding Zaroff, Rainsford builds a deadfall trap consisting of a dead tree balanced against a living one. The trap injures Zaroff's shoulder, forcing him to return home for treatment, but he calls out his respect for Rainsford's ingenuity as he leaves. Rainsford next digs a trapping pit and plants sharpened stakes at its bottom; one of Zaroff's dogs falls in and is killed. The next morning, he sacrifices his knife to build a trap that kills Ivan when he stumbles into it, then dives off a cliff and into the sea in order to escape Zaroff and his approaching dogs. Disappointed at Rainsford's apparent suicide, Zaroff returns home and settles in for the night. His relaxation is disturbed by two thoughts: the difficulty of replacing Ivan and the fact that Rainsford has escaped him.
Zaroff locks himself in his bedroom and turns on the lights, only to find Rainsford waiting for him, having swum around the island to evade the dogs and sneak into the chateau. Zaroff offers congratulations for defeating him, but Rainsford prepares to fight him, saying that the hunt is not yet over. A delighted Zaroff responds that the loser will be fed to his dogs, while the winner will sleep in his bed. The story abruptly concludes later that night by stating that Rainsford enjoyed the comfort of the bed, implying that he killed Zaroff in the fight.
