Colorado Private Investigator Xavier McElwee has been looking forward to attending the Denver Comic-Con for many months now, hoping to enjoy a brief respite from work and partake in his favorite pastime, cosplay, but when a murder occurs directly in front of him and a crowd of spectators on the first day of the convention the detective who asks "What would the Doctor do?" finds himself in the grip of a new mystery. Only this time, a sinister and otherworldly organization manipulates events from behind the scenes, and it is determined to thwart his attempts to solve the case at all costs.