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.
A bright-eyed young actress travels to Hollywood, only to be ensnared in a dark conspiracy involving a woman who was nearly murdered, and now has amnesia because of a car crash. Eventually, both women are pulled into a psychotic illusion involving a dangerous blue box, a director named Adam Kesher, and the mysterious night club Silencio.
Blonde Betty Elms has only just arrived in Hollywood to become a movie star when she meets an enigmatic brunette with amnesia. Meanwhile, as the two set off to solve the second woman's identity, filmmaker Adam Kesher runs into ominous trouble while casting his latest project.