The television series "Grimm" follows Nick Burkhardt, a homicide detective who discovers that his lineage makes him one of a long line of hunters of the supernatural and dangerous. Burkhardt and his companions Hank and Juliette must contend with forces of myth derived from European fairy tales and folklore in order to keep people safe.
Nick has the ability to perceive monsters, making him the titular "Grimm" in reference to the original hunters, the Brothers Grimm. He is in fact descended from those storytellers, who used their writings as a cover to investigate murders perpetrated by supernatural entities and other monsters.
Nick is slowly brought into the world of the supernatural where he is partnered with a Big Bad Wolf, reformed from his marauding ways, and begins to investigate what he thought were mundane crimes. Nick discovers that there are many fairy tale entities living and hunting in human cities.
Nick has visions and dreams that portend toward a greater destiny. He struggles to accept his place in the world while, week to week, he fights monsters others do not believe exist. This causes Nick to feel isolated and to fight against his destiny and what he perceives as the willful ignorance of the world around him.