The PCs are about to face the most dangerous threat of their adventuring careers… kids.
Setup
The PCs need a favour from an innkeeper, merchant or noble figure. The cost of the favour is babysitting. This might be only for a few hours but it could be as long as a few days (this is left up to the DM). Fighting monsters is easy compared to watching young children. Can the PCs entertain and feed the children without getting them killed?