To prevail is to ‘gain the desired effect’. It’s kind of like achieving a goal, or overcoming the odds.
Like in a book or a movie, when the hero prevails, they usually defeat the villain, resolve a conflict, or achieve whatever goal(s) they had.
Hope this helps.
Can you provide the story ?
The answer is: a violent storm.
In Act 1, Scene 3 of Shakespeare's "Julius Caesar," Cassius summons Casca to Pompey's porch to gather with the rest of the men in their scheme to execute Caesar. However, he suggests the brutal weather taking place in Rome prevents people from walking in the street, which in the end is favorable for the bloody, savage deed they are to perform.
