It all started with them meeting. They first met and fell in love, but he didn't have the money to marry her. The king found out and punished him. In the exposition it mentions how the arena works. It talks about how it gives a person a fifty-fifty chance.
The rising action is when he is in the cell about to be taken out into the arena. Also at this time the princess is debating on which door to lead him to.
The Princess is saddened because she will either lose her lover to a fierce tiger or to another women. The conflict here is she is deciding on whether or not to have her lover happy or killed. That is what gets you ready for the climax.
The climax is when we see the decision made by the princess. She told her lover to open the right door; but what is on the other side? This is the most suspenseful part, because you see the decision made, but do not know what it will lead to.
The falling action is when the lover walks toward the door that the princess has told him to go to. You don't actually know what door he chose, so this is leading up to the resolution. The result of the climax.
It all ends with the young man being killed by the tiger. The princess couldn't see her lover with another women, so she had him killed. It all ended like this.