Overview
The Story of Mankind is a 1957 American dark fantasy film loosely based on the nonfiction book The Story of Mankind (1921) by Hendrik Willem van Loon. The film was directed and coproduced by Irwin Allen and released by Warner Bros.
Plot
Scientists have developed a weapon called the Super H-bomb that can exterminate the human race. A high tribunal in the Great Court of Outer Space is convened to decide whether divine intervention should be allowed to stop the bomb's detonation. The devil, who goes by the name of Mr. Scratch, prosecutes mankind while the Spirit of Man defends it.
Scratch and the Spirit of Man are allowed to take the tribunal to any period of time to present evidence for mankind's salvation or damnation. They take the tribunal from prehistory through Egyptian, Greco-Roman, Medieval, Renaissance, Enlightenment and modern times, looking at historical figures.
Ultimately the tribunal is asked to rule. The high judge, facing Mr. Scratch and the Spirit with a large assemblage of peoples in their native costumes behind them, declares that the good and evil of mankind are too finely balanced. A decision is suspended until they return. When they return, they expect to see a resolution of humanity's age-old struggle with itself.
From Wikipedia (CC BY-SA 4.0).