Ruins of the Great City Bridge

Publisher's blurb:

This huge city bridge is in ruins and pockmarked with holes. The remains of sprawling buildings still cover it. Three levels showcase the top story buildings with roofs, the abandoned interiors of the buildings, as well as the understory of the bridge with a sprawling undercity complex of decrepit boardwalks and abandoned taverns.

When your players are asked to kill the monsters which have recently ravaged the town on the bridge–causing the locals to flee for their lives–your players must choose between eradicating them, or save them with the help of a local druid who argues they are just misunderstood, and usually peaceful, creatures. What will your players choose?