The year is 2600 AD or 419 B.
(the Brotherhood of Man) when Anthony Meredith, a scholar from the future, comes across an important manuscript of Avis Everhard written around 1912-1932 when Iron Heel came to power in USA.
Iron Heel is an oligarchic regime where the power and money is concentrated in the hands of a few rulers and Avis and her husband Ernest are involved in a conspiracy to overthrow it.
Although Meredith knows the fate of Avis and Ernest but what they saw and suffered would.