From publisher blurb:
Perilous Horrors in a Hidden Jungle Temple!
The vile practice of slavery casts a shadow over all of Thule. In Red Chains, the characters must travel to the city of Marg, home base of the Crimson Slavers who terrorize much of the continent. Their quest is simple: Rescue the son of an important chieftain from the clutches of Marg’s slavers. But in their effort to free the young barbarian from his captors, the heroes find the trail leading them into a cruel, twisted realm of human bondage, underground cults, and dark rituals.
Red Chains is a short PDF adventure for 4th to 6th level characters, but because it is relatively light on combat, it can easily be modified for characters of any level. It is set in the Primeval Thule campaign setting, and written by long-time RPG designer Steve Winter. This adventure was written as part of the Primeval Thule 5e kickstarter campaign, and is now available for purchase for your 5e Thule game!