After WWII, As U.K felt threat of nuclear war which cased in uncertain point of future,
They tried to shift 25 of boys. But unfortunately the plane containing the boys fall to the sea.
They arrived to an island and they waited rescue.
They lived there following the rules under Ralph’s conduction.
But there were confliction between Ralph, who suggested to build cabin in order to be rescued and Jack, who insisted hunting, eventually Jack and Roger made their gang and left the group.
A boy Simon went to find animal and be killed by Jack.
After that, there were rumor that beast is living in the island and boys went to Jack’s group for safety.
Only Ralph and Piggy were left. The island became savage and cruel.
Jack became crazy and killed Piggy too.
Ralph and boys escaped from the throes of death and barely were rescued by cruiser.

As we can see by the story, This story is basically conflict composition between Ralph and Jack.
The boy’s behavior symbolizes the struggle between the civilizing instinct to obey rules and behave morally
and the savage instinct to attain power and behave immorally
In my opinion, The writer is telling us that the absence of society and social boundary causes corruption of individual ethics and reason.
Through this novel, I had time to think about what is the desirable human character.