Former Soviet leader Leon Trotsky, in exile visits Mexico City, Mexico. Leon Trotsky and his wife (Natalia Ivanovna Sedova) with several persons, including Diego Rivera, in a garden in Mexico City. A Lockheed Electra passenger aircraft taxis after landing and parks on a ramp in Mexico. The aircraft carries identification: "XA-BA," indicating it is registered in Mexico. it is being met by several persons including a military officer in uniform. Scene changes to Trotsky and his wife, being helped from the rear platform of a railroad passenger train. They are surrounded by greeters including several uniformed police officers. Next, Trotsky is seen in back seat of a car accompanied by a police officer. In next scene Trotsky and his wife pose with Diego Rivera and another man, in the garden seen at start of the film (possibly home of Diego Rivera, with whom Trotsky lived for a few months while in exile). Military officers are seen on patio in background. Closeup of Trotsky and then broader view of him standing under a tree speaking to several persons.
The Dewey Commission, an independent body set up to examine the truth of the accusations made against Leon Trotsky in the Moscow Trials, meets to examine Trotsky at a house in Coyoacan, Mexico City, Mexico. Various guests and dignitaries on a porch (one woman in the group shot is possibly Frida Kahlo, wife of Diego Rivera). Bolshevik revolutionary Leon Trotsky greets guests including Commission Chairman, American philosopher John Dewey (with white hair and moustache). Commission members seated at the table interact with Trotsky.