In mid-Victorian London, butler Sebastian Michaelis serves Ciel Phantomhive, the 12-year-old head of a noble English family. Sebastian is a perfect man. His knowledge, education, cooking and martial arts skills are excellent. What's more, he can fulfill any of his master's requests with ease and perfection due to his secret demonic lineage and the contract he has with his master.
Nick Burkhardt (David Giuntoli) is a homicide detective who is given new responsibilities after discovering that he is a descendant of the Grimm, a secret society. His main goal is to find a balance between real life and mythology. The new routine brings challenges and dangers, especially for Nick's fiancée, Juliette Silverton (Bitsie Tulloch), and his coworker, Hank Griffin (Russell Hornsby).