In a city where people can permanently transform into physical manifestations of their worst nightmares, a cowardly girl named Ness works for an organization that manages these monsters. After witnessing a murder, she is forced to team up with a group of unlikely allies to uncover a conspiracy that threatens the city's fragile stability. As she navigates the dangerous streets, Ness must confront her own paralyzing fears to survive a plot involving a nightmare capable of permanent destruction.