Nick Burkhardt is a Portland, Oregon murder detective who surprisingly discovers he's a descendant of an elite group of criminal hunters from the Grimm line whose mission is to stop the growing of mythological creatures in the world. The Brothers Grimm wrote fairy tales that children have adored for generations, but imagine if their villains were real, and Nick was the only one who could stop them. Handling as a cop, Nick attempts to hide his secret as a Grimm from and protect his fiancé, Juliette Silverton, and his partner, Hank Griffin, when he deeply gets tangled with the ancient rivalries and alliances of the Grimm world.