Winter and Arden Allister are two teenage sisters who've just moved from
Memphis to San Francisco and their interracial family is thrust into the
bourgeoisie of San Francisco's elite once the girls begin the year at an
exclusive private school. But when Winter starts having problems with a
boy at school and Arden continues to suffer inexplicable and terrifying
blackouts, each girl must tease loose a separate thread of fate from
their interwoven, close-knit identity as sisters in order to unravel the
arcane mystery of who they really are. Once their futures are
disentangled, Winter and Arden find that destiny has drafted them both
into the oldest war the world's ever known-but placed them on opposite
sides.