During a successful IVF process, Olivia meets Anna, who is in a similar situation, and the two women bond, but Olivia and her husband Brian make a shocking discovery about their twins that sets the two women against each other.

Katie Sharp est l'archétype de la lycéenne populaire. Elle tourmente Cassandra Evans jusqu'à ce qu'un voeu nocturne soit prononcé et que les jeunes filles échangent leurs corps.