The beginning of the story is presenting how the king is semi barbaric. He describes to us about the arena he uses to put people in for trial., and also for people to choose doors to their fate with a tiger in one or a fair girl.
The king is aware of his daughters affair and chooses to put the perpetrator in jail and on trial.
The princess points to the door she chooses for him.
The guess of door being picked are based off what door he went through and it really impacted the princesses feelings.
The readers of the story are not sure what door he picked so we are left guess what happened.
The overall theme of the story is that choices come with consequences.