Galilei Donna: Storia di tre sorelle a caccia di un mistero (ガリレイドンナ Garireidonna, lit. "Galilei Donna: the story of three sisters in the search of a mistery") is an original television anime series produced by A-1 Pictures and directed by Yasuomi Umetsu. Episode 1 was previewed at a screening in Tokyo on October 5, 2013. Regular broadcasting began on October 10, 2013.
The story takes place in the year 2061 AD where global warming is a thing of the past and the early days of a glacial era now cover the entire world. Three descendants of Galileo are living in Tuscany, Italy. They are Hozuki Ferrari, Hazuki Ferrari, and Kazuki Ferrari. Suddenly, they are attacked by a mysterious organization and they end up on international wanted lists. The organization's purpose is something called "Galileo Tezoro," but with no other clue as to what is going on, the three sisters must join forces to overcome the crisis! The problem is that their personalities are too different, making this no easy task!