Chiko sees the dream of the night, it's like–––––

At that time, as if people were talking about the weather, everyone was talking about the phantom thief, Twenty-Faces. That very "Twenty-Faced Monster", along with the secret treasure Anastasia Ruby, steals away Chiko who was bullied and raised by her uncle and his wife, as if they owned her. Chiko escaped from the unrelenting days of being kept, aiming to live her life the way she wants, and travels to the vast world with a mysterious phantom thief, Twenty-Faces! An emotional and magical adventure where Chiko's soft heart and bold action blossoms through various incidents that she encounters everywhere!