Narrated by Ishmael, the novel follows the voyage of the whaling ship Pequod under the monomaniacal Captain Ahab, who seeks vengeance on Moby‑Dick, the great white sperm whale that took his leg. Through encounters with diverse crewmates—Queequeg, Starbuck, Fedallah—and vivid depictions of 19th‑century whaling life, Melville explores obsession, fate, and man’s place in nature, building to the Pequod’s fateful confrontation with the whale.