The old EMPEROR YUI does not enjoy being emperor, and is always anxious to pass his throne on. On the other hand, his sister the PRINCESS OF PEACE is always covetous in being the EMPRESS. She is an ambitious and deep person. She works closely with the EMPEROR and has successfully established good relationships with all the senior officials.YUI plans to pass his throne to his son, the PRINCE YUEN, his natural successor. But before crowning, YUEN has to be under observation for three months. The PRINCESS plots to defame YUEN. Yet, unexpectedly, all her conspiracies turn out to be tools assisting the PRINCE to build up his image as a wise and fair emperor.