Young Leah lives in a large old house with her family, including her mother who seems distant somehow - lost in her thoughts.

Each night Leah is visited by a mysterious guest who might be able to give her some answers about her mother's peculiar behaviour. Leah's strange visitor gives her nightly challenges to accomplish and rewards her with bits of knowledge that, when pieced together, threaten to shine a dangerous light on both the truth in her nightmares and of the world she lives in.