She tells Quinn to map out Magmarr, thinking this will safe enough to not kill him but a challenge nonetheless.

  Magmarr is almost totally out of control, and it shows.  The builder's guild has run rampant for the entirety of Isadare's rule (12 years), so the whole place is a mishmash of hodgepodge architecture and overlapping half-baked projects.  

  Queen Isadare usually gives the Map Quest.  It seems easy, but the place is always changing and maps are hardly ever current; the Map Quest is an easy way to get a new map a few times a year. 

  The rules laid out are thus:  Quinn has two weeks to map out Magmarr.  He can bring his friends, but they can't go collect more data to help the map.  If they do, they will be sent home and the quest immediately failed.  To prove his success, the map will be handed over to the queen and Quinn will give her tour of the kingdom, using the map as a guide.

He gets attacked by some random guys trying to mug him or whatever.  this is when Amelya betrays everyone, letting Hearts fellas into the city, laying siege to it, maybe??