SPOILER ALERT: the following article contains massive spoilers, including the ending. If you have not yet seen the movie, proceed at your own risk, or better, come back to this article later!
SPOILERS AHEAD
Royal Palace Plot Summary and Synopsis
Eugenia is the queen of an imaginary European country. When her husband dies, quite unexpectedly, the country is left without a king. According to the law, the new king needs to be married so that leaves out the eldest son. Her youngest son, Prince Arnaud is married to the lovely Armelle and they have two young children. They become the future rulers of the kingdom.
Source: Wikipedia (CC BY-SA 3.0).