"Under the Dome" is a science fiction novel by Stephen King that tells the story of a small town in Maine suddenly sealed off from the outside world by an invisible, impenetrable dome. The residents struggle to survive as resources dwindle and tensions rise, revealing the complexities of human nature under pressure. As the town's leaders attempt to maintain order, conflicts arise among the citizens, leading to power struggles and moral dilemmas. The dome serves as a catalyst for exploring themes of isolation, community, and the impact of authority, ultimately challenging the characters' values and relationships.