From publisher blurb:
The Sewers of Blackhelm is a short introductory adventure for 5th Edition Dungeons and Dragons and the campaign setting: Asnar the Last Kingdom. It can easily be adapted for any campaign setting that has a large urban city setting.
The Sewers of Blackhelm is a short adventure that you should be able to complete in a single gaming session with your player characters. Five plot hooks are included in the adventure to quickly integrate your player characters into the adventure. Either way the players start the adventure, they are hired to investigate a string of robberies in the warehouse district involving thefts of large quantities of food and drink. They soon find themselves below the city in the sewers solving the mystery as they are involved in 12+ encounters.
Included in the adventure is a seperate high quality 24 x 36 map of the sewer in both PDF and JPEG formats.