Cassandra is a normal girl in London, except for the fact that she is and orphan and a theif who lives in a large tree in a park. She is finally getting used to her life there, but what happens when she witnesses the changing of seasons and, guess what... Fairies. What will she do when she suddenly finds out she is a fairy herself because of a bad pixie dust encounter? Will she decide to stay, or go back to her life? And just what happens when she falls in love with an attractive sparrow man?