The principal character is 15-year-old Isabelle Laustin, other characters being her parents Leon and Marie, Isabelle's friends Jean and his sister Marie, and Isabelle's suitor, Captain Victor. When Paris is besieged and Napoleon III's army is defeated, Isabelle escapes to London, disguised as a boy, and engages in secret agent stuff. (Source: AniDB)

Based on a manga about cats and their sake loving owner.

Nell is a young girl living with her grandfather, Mr Trent, the owner of a shop in London. As he couldn't payback a loan he made, he has to flee with Nell. They decide to search for Nell's mother, who is living somewhere in Great Britain...