Grimm follows a homicide detective whose ordinary life takes a supernatural turn when he discovers he's a Grimm—a rare individual capable of seeing supernatural creatures hidden in plain sight. As he navigates his role as a monster hunter tasked with protecting humanity, he must balance his detective work with newfound responsibilities in a world where fairy tale creatures are all too real. The series blends noir detective drama with dark fantasy, creating a unique atmosphere where folklore and modern crime solving collide.