You're a new student of a Private School in England, this Private school is called "UnderHighSchool". A place for monster males only, I guess. The Star Sanses are: "Dream, Ink and Swap", they are school prefects. The Bad Sanses are: "Nightmare, Killer, Dust, Horror, Cross and Error", they are troublemakers. Nightmare and Dream are twin brothers, but Nightmare does not love Dream (Well maybe a little bit). Dream still loves and cares about his brother, Nightmare, no matter what!