The Ruined Town of Brasstooth

Brasstooth used to be a bustling Toutian town of 2300 people, near to the provincial capital of Teiglin, Erkhart. During the Summoning, that all changed. The majority fled westwards, away from Erkhart and the Chaos Portal that was spewing out monsters. Some were caught and killed by the monsters.

A group of about 60 villagers fled into a small wood just outside Brasstooth and asked a powerful elf spellsword (called Gerrillion)  for help. His answer was to transform them into trees with a Massmorph spell. Since Gerrillion lived in a wood, the transformed townsfolk are now indistinguishable from the normal trees. Massmorph has no time limit, and as such they have remained as trees, in a sort of deep slumber, for nearly 50 years. Gerrillion has since moved to Glensor Town and he still remembers the incident. He honestly believes that he did the best he could as at the moment the townsfolk are still fairly safe as long as the monsters don't start chopping down trees. However, if the Massmorph spell is dispelled, there would be 60 confused and helpless non-combatant humans in the middle of the monster-infested lands of Chaos.
Escorting them 30 miles to Castellan Keep (which in itself is really only a temporary stop, not an end of their journey) would require plenty of soldiers and supplies (food and water) if it is not to turn into a massacre that has been merely delayed for 50 years. One adventure hook is if a brother of one of the townsfolk wants to have closure about what happened to his brother and asks the PCs to investigate. They fled Brasstooth 50 years ago in different directions, with his brother saying he was going to ask the elf "wizard" for help.

The town itself is not that interesting. It was not walled or fortified, just a sprawl around a crossroads and a marketplace. There is no Chaos Portal within the town, but plenty of monsters from Erkhart have wandered over here as the ruined capital is quite crowded.  

There seem to be two main camps - a band of ogres who have dominated a small tribe of hobgoblins, and wererats who have allied with both human chaos cultists and kobolds. The ogres and hobgoblins have taken over the surface buildings in the centre of town, including the desecrated church of Sestarna, the mayor's house and the town hall. The kobolds and wererats have taken over the sewers and cellars, and have been industrious in tunnelling under Brasstooth. The human cultists worship Pelepton and believe the wererats have been blessed by the treacherous deity.

 Beyond these two groups there are individual monsters and small clusters, including a lone owlbear that wanders the streets at night, several ghouls that seek to pick off careless humanoids and a single troll who the ogres are trying to persuade to join them.