Cassandra has been locked up all her life.
Her adventurous mind strains to be free every moment of the day, but under her mother's harsh rule, there is no way for her to escape. Until she decides to run away, just for a night.
One simple task is all it will take for her to discover a new world - a world whose very fabric is knitted out of adventure, where steely grey moonlight will no longer be an enemy but a friend. A simple task and yet an impossible feat.
All she has to do is cross the line.