Integral setting is when the action, character, or theme are influenced by the time and place, setting. Controlling setting controls characters. If you confine a character to a certain setting it defines the character. Characters, given these circumstances, in this time and place, behave in this way. I got this from some of my notes.
We forgot Marks' ticket at our hotel.
Answer:
The character found that there really were dragons and began doing research again, finding that dragons may have four stomachs, it is able to digest things like birds do, among other things.
The nice thing about questions like these is that they can't get mad if you have a run-on sentence. For future reference, you don't have to put in all of the details, just the main points.