From the introduction: The adventure kicks off the Agents of Edgewatch Adventure Path, in which the heroes join the city watch to solve a series of crimes across Absalom, the City of Lost Omens, before the crooks can pull off the ultimate heist! This volume also includes an in-depth gazetteer of Absalom's Radiant Festival, thematically appropriate new monsters, and new rules designed to support the Agents of Edgewatch campaign!