A retired farmer and widower in his seventies named Alvin Straight learns one day that his distant brother Lyle has suffered a stroke and may not recover. Alvin is determined to make things right with Lyle while he still can, but his brother lives in Wisconsin, while Alvin is stuck in Iowa with no car and no driver's license. He then has the idea of making the trip on his old lawnmower, thus beginning a picturesque and at times deeply spiritual odyssey.
The Earth is invaded by alien parasites aka "slugs" that ride on people's backs and control their minds. A trio of American government agents attempt to thwart this.
Ray Kinsella is an Iowa farmer who hears a mysterious voice telling him to turn his cornfield into a baseball diamond. He does, but the voice's directions don't stop -- even after the spirits of deceased ballplayers turn up to play.
Gilbert Grape is a small-town young man with a lot of responsibility. Chief among his concerns are his mother, who is so overweight that she can't leave the house, and his mentally impaired younger brother, Arnie, who has a knack for finding trouble. Settled into a job at a grocery store and an ongoing affair with local woman Betty Carver, Gilbert finally has his life shaken up by the free-spirited Becky.