
Portland detective Nick Burkhardt, descended from a long line of warriors known as Grimms, defends his city from magical creatures known as Wesen, which are part human and part animal. Fighting alongside his partner, Hank, colleague Sergeant Wu and friends Monroe and Rosalee, Nick faces off against internal and external forces, including his police captain, Sean Renard.

Angelina (Jaime Ray Newman) comes to town with bad news; Nick asks Hank for help keeping Monroe safe; Capt. Renard has a visit from a former acquaintance (Alice Evans).

An investigation into a grisly murder leads Hank and Nick to a seemingly unstable man who is on the run with his daughter; Monroe realizes that filling in for Rosalee will be harder than he thought.

Hank and Nick investigate when a high-school competition turns deadly; Capt. Renard faces an unwanted infatuation with him.

Nick realizes a series of child abductions that he is investigating bear a striking resemblance to the Hispanic legend of "La Llorona."