The town of Silverfox Mill was a quiet place for many years, but this peaceful town has begun to unravel. The arrival of the Usury Guild drained the populace of their livelihood, forcing many into poverty, alcoholism, and prostitution. Complicating this trying time the town has recently lost its most beloved citizen, the wizard Osric Skanderbag. With his absence it seems the long-dead witch Anna has been raised to murder and poison, but this may be a front for more contemporary threats.
Teenagers who run away from home to live in the wilderness may become feral. As they become more and more feral, they gain some supernatural powers (a la Peter Pan - ability to fly, things they imagine come true - possibly quite powerful), but at the expense of their humanity and ability to speak, comprehend complex subjects, etc. Maybe they have a leader: the most feral of them all.
A regression into a fantasy childlike state.