Driven by a profound disdain for American consumerism, an eccentric inventor uproots his family to the Honduran jungle to establish a self-sustaining utopia. Allie Fox, a brilliant but increasingly unstable patriarch, forces his wife and children into the harsh wilderness of the Mosquito Coast. His objective is to construct an ice-making machine and a civilization free from the perceived decay of modern society. However, his obsession with control and his refusal to acknowledge the physical limitations of the environment place his family in escalating danger. The narrative is presented through the perspective of his eldest son, Charlie, who observes his father's descent from visionary to tyrant.

Readers frequently highlight the unsettling transformation of Allie Fox from a charismatic innovator into a dangerous zealot. Discussion often centers on the tension between the family's survival needs and the father's uncompromising ideological demands. Critics note the effectiveness of the atmospheric setting, which serves as both a sanctuary and a prison for the characters. The prose is often praised for its technical precision regarding the inventor's projects, which grounds the more extreme psychological developments in a sense of harsh reality. Many readers find the exploration of isolation and authority to be the most compelling aspect of the narrative.