At home one memorable summer, Miranda unearths a mysterious suitcase in her attic that once belonged to her late grandmother. Inside, she finds a strange and unopenable wooden box. Determined to discover what's inside, she ends up enlisting the help of Maya, the owner of a local spiritualist shop, and is drawn into a world of witchcraft, magic and temptation. As she tries to keep up appearances as the perfect daughter, her discovery threatens to tear everything apart, putting everyone around her in danger. Can she find a way to stay in control or would the box have been better left buried?