The film is based on the ancient Chinese proverb "One monk will shoulder two buckets of water, two monks will share the load, but add a third and no one will want to fetch water.
STORY:
A young monk lives a simple life in a temple on top of a hill. He has one daily task of hauling two buckets of water up the hill. He tries to share the job with another monk, but the carry pole is only long enough for one bucket. The arrival of a third monk prompts everyone to expect that someone else will take on the chore. Consequently, no one fetches water though everybody is thirsty. At night, a rat comes to scrounge and then knocks the candleholder, leading to a devastating fire in the temple. The three monks finally unite together and make a concerted effort to put out the fire. Since then they understand the old saying "unity is strength" and begin to live a harmonious life. The temple never lacks water again.*
IMPORTANT POM CONCEPTS EXPLAINED HERE.
When there was one monk he had no other optipn but to carry the buckets by himself. It was long and tiring. This is CRAFTSMANSHIP and commonises the task as he brings water whenever he likes.
Then comes another monk. Together they to bring water. As the stick is small they could carry only one bucket. But thier effort reduced and they could enjoy their time while comming. But this process had a major drawback, if the bucket was tilted to someones side more he had to carry more load. So a solution was reached by a standard methord that it is to be place at the half position only so as to distribute the load equally.
This methord had an added advantage that here the efficiency increased as manual effort per kg of water reduced drastically and they were fresh on reaching the destination.
Now a problem came when third monk reached. Now work division was difficult and the task was put on each others shoulders. This was poor management and a proof that with poor management compiling more more workers would lead to drop in productivity.
Now with the event of fire all of them worked together in a fire fighting mode and devised a new methord of bringing water to the top.
This new methord has an added number of advantage to it which will be discussed below.
CREATIVE PROBLEM SOLUTION: To address a crisis situation in future they devised a pulley methord of bringing up water to the top.
MODERN DAY APPROACH: This methord is a moder day assebly line methord in which productivity increased drastically.
INTERDEPENDENCY: Here in this improved methord there is a high amount of interdependency which reduces the unproductive time due to social loafing is reduced.
THEORY X AND THEORY Y: This methord is even better than theory X or theory Y because this reduces the work content on each by so much that it makes work play.So the workers enjoy doing their work.This is theory Z.
SPECIALIZATION , DECENTRALIZATION AND STANDIZATION OF WORK: Here work is de centralized and one person does one job only. This gives enhances productivity and excellence of work as both efficiency and effictiveness increases.
SYNERGY: Here clear enough is that the three persons working together can put more water to the temple than all the working individually.
* copied from Wikipedia