Ashita no Nadja

This story takes place about one hundred years ago. Nadja is a bright, cheerful girl who was raised in an orphanage near London, England. Nadja was entrusted to the orphanage when she was a baby. So she thought her father and mother were dead. But before her thirteenth birthday, she found out that her mother might be alive..
Nadja sets out on a journey to find her mother! With all of Europe as the stage, Nadja's exciting adventure begins!
(Source: AniDB)