Kindred spirits from different worlds become entangled together one volatile summer in this passionate, psychological thriller. Local girl Mona (Natalie Press) is naive, reckless and filled with yearning for something more in life. Tamsin (Emily Blunt) is spoiled and bored and trying to escape the confines of her prep-school existence when she draws Mona into her fantasy world. But what started as a magical friendship soon becomes laced with deception and danger.