The Mosquito Coast is a 1986 American drama film directed by Peter Weir and starring Harrison Ford, Helen Mirren, Andre Gregory, and River Phoenix. It is based on the 1981 novel of the same name by Paul Theroux. The film tells the story of a family that leaves the United States and tries to find a happier and simpler life in the jungles of Central America. However, their jungle paradise quickly turns into a dystopia as their stubborn father's behavior becomes increasingly erratic and aggressive. It was shot in the cities of Cartersville and Rome in Georgia, in addition to Baltimore, Maryland and Belize.

Plot

Allie Fox is a brilliant but stubborn inventor who has grown fed up with the American Dream and consumerism. Furthermore, he believes that a nuclear war is on the horizon as a result of American greed and crime. After Allie and his eldest son Charlie acquire the components at a local dump, he finishes assembling his latest creation, an ice machine known as Fat Boy. Allie's boss, Mr. Polski, an asparagus farm owner, complains that Allie is not tending to the asparagus, which is rotting. Allie, Charlie, and Allie's youngest son, Jerry, meet Mr. Polski, and Allie shows him "Fat Boy." The machine leaves Polski unimpressed. As he drives past the fields, a dejected Allie comments on immigrants picking asparagus, and says that where they come from, they might think of ice as a luxury.

The Mosquito Coast (film)

The next morning, Allie throws a party for the immigrant workers before telling his family that they're leaving the United States. On board a Panamanian barge, the family meets Reverend Spellgood, a missionary, his wife, and their daughter, Emily. Allie and the Reverend clash due to their opposing religious views. When the barge docks in Belize City, the families disembark and go their separate ways. From a drunken German, Allie purchases a small village called Jeronimo located in the rainforest along the river.

The Mosquito Coast (film)

Mr. Haddy takes Allie and his family upriver to Jeronimo. Allie meets the inhabitants and proceeds to start building a new, "advanced" civilization, inventing many new things in the process. The locals take kindly to Allie and his family, but Allie's will to build a utopian civilization keeps them working to their limits. Reverend Spellgood arrives to convert Jeronimo's citizens. In the process, Allie and Spellgood angrily denounce each other, leading to a permanent schism: Allie believes Spellgood to be a religious zealot; Spellgood believes Allie to be a communist. Allie sets to constructing a huge version of "Fat Boy" that can supply the town with ice. Upon completing the machine, Allie hears rumors of a native tribe in the mountains that has never seen ice. Allie recruits his two sons to carry a load of ice into the jungle to supply the tribe. Upon arriving, Allie finds that the load has melted, and that the tribe has already been visited by missionaries.

The Mosquito Coast (film)

When Allie returns to Jeronimo, he learns that Spellgood has left with much of the populace, scaring them with stories of God's biblical destruction. The near-empty town is visited by three rebels, who demand to use Jeronimo as a base. Allie and his family agree to accommodate them while Allie concocts a plan to be rid of them. Set on freezing them to death, Allie bunks the rebels up in the giant ice machine, tells Charlie to lock its only other exit, and activates it. The rebels, waking in panic, try to shoot their way out. To Allie's horror, the rebels' gunfire sets off an explosion within the machine. By the next morning, both the machine and the family's home is in ruins, and chemicals from the destroyed machine have severely polluted the river.

Forced downstream, Allie and his family arrive at the coast. Mother and the children rejoice, believing they can return to the United States. Allie, refusing to believe his dream has been shattered, announces that they have all they need on the beach and tells them that the United States has been destroyed in a nuclear war. Settling on the beach in a houseboat he has built, and refusing assistance from Mr. Haddy, Allie believes that the family has accomplished building a utopia. One night, the storm surge from a tropical cyclone nearly forces the family out to sea until Charlie reveals that he has been hiding motor components (secretly given to him by Mr. Haddy), allowing them to start the motor on the boat.