Two sisters bearing a striking resemblance to each other could easily trade places, at least momentarily – a glance past their ebony hair and eyes the colour of a stormy green sea exposes their true identity. For although they mirror each other in form, Molly and Merry possess opposing personalities – one is a temptress motivated by vanity and opportunism, while the other is an easily intimidated and vulnerable outcast – and their association seems completely unfathomable. Molly and Merry are parted during childhood as a result of a psychological distance between them. Molly’s extroversion allows her to attend the prestigious Primrose School for Young Ladies, where her popularity soars; Merry is relegated to Fotheringale, a school for backward children. Their separation continues for a lifetime, but when tragedy strikes, they are briefly united. Unless they use this opportunity to reconcile their differences, their fate will rest in the clutches of despair.