In a world where two kinds of vampires live among us, a murder is committed. Setsuna Yuunagi didn't know what she wanted out of life, but coming to America wasn't high on her list. Then she met Dominique Faye, a girl who seemed both familiar and mysterious.

When strange pranks keep occurring around the school, Setsuna's natural curiosity and obsession with solving puzzles lead her down a path with more questions than answers.

Will Setsuna's school life remain safe? Or will Faye be the disruption she's always secretly craved?