The Tower That Has Imprisoned the World for Thousands of Years

They are competitive, kill each other, and fight to the death for some imperial hegemony and supremacy. One day, they realize that this world is just a tower imprisoning them in the hands of others. When they feel that they are invincible, they realize that they are still ants in the eyes of others, their playthings, and their feast. Is it ridiculous or sad? How should they face it?