Tom Canty, the pauper was at the gates of the castle. The first guard seizes Tom and throws him into the crowd. This where he meets the prince. They notice they look alike and swap places. This is important because this is how they first meet.
Scene 5 pg 160-161
John Canty, Tom's dad, and the prince meet. The prince does not recognize John Canty, but Tom's dad thinks the prince is Tom. Tom's dad is angry that his son would be out late at night. The prince runs off because he is scared by the dad. This is important because it shows that the dad doesn't recognize his son and can be angry.
Scene 7 pg 162
While Tom is acting as the prince the herald announces that the king is dead. The prince also hears of his father's death and he is stunned about the death of the king. This is important because that means with Tom acting like the prince he will be king.
Scene 8 pg 164
The prince is arrested after Hugo makes it look like the prince stole something. This is important because if the prince gets arrested or something bad happens then Tom Canty will become king but he's not really the prince or king.
The prince is in jail and hears the stories of the other prisoners. This is important because the prince realizes that he needs to be a merciful king and the laws are not good.
Tom is about to be crowned as king and the prince finally steps up.Tom admits that the prince is the prince. The prince makes Tom the king's ward. This is important because the prince realizes he needs to lead with mercy and learned from Tom's ruling.