The Children of Fear is a multi-part campaign set in the 1920s that explores some of the myths and legends of Central Asia and Northern India. The core of the campaign is designed to allow players to take the reins, enabling investigators to decide how their journey will unfold. Additionally, the storyline is designed with flexibility, allowing for play at different scales or with varying degrees of involvement with the Cthulhu Mythos, whether by including the outer gods themselves or as a series of more contained, occult-based adventures. Guidance is provided for the Keeper to tailor the exact nature of the threat in a way that best suits their group's preferences.