Within the noble families of England exists Phantomhive's butler: Sebastian Michaelis. He has unquestionably perfect knowledge, manners and martial arts as well as talents in every other area imaginable. Sebastian is so perfect, though he is forever destined to meet the needs of a 12 year old master (later 13). Wearing a black tailcoat whilst gracefully brewing the world's strongest red tea, how is it possible that such a perfect butler is able to cope with such a demanding master? 

The secrets of Sebastian and his cunning young master Ciel slowly unfold as tragic and unexpected cases make their appearance.