100 children have been kidnapped, almost all of the children in the village, by a criminal gang and taken into the forest where they're being held for ransom by the thieves guild.
This adventure can be can be easily customized to a party of any size or level, or run as a level 3 adventure for 5 players. It can work as a small side adventure in an existing campaign, as a standalone one-shot, or the start of a new adventure.