Synopsis
Hozuki, Kazuki, and Hazuki—the granddaughter, great-granddaughter, and great-great-granddaughter of Galileo—have very different personalities and interests, which often leads to conflict between them. Their disagreements grow worse when a secret organization attacks them, trying to take the "Galileo Tesoro," which their ancestor supposedly discovered. After the attack, the three of them set off in an airship they built, but their constant fighting makes it hard for them to work together when danger is all around them. As they face these problems, the truth about what the Tesoro really is, what their enemies want, and how their family relationships are changing all start to come out. This mix of action and mystery focuses on the special charm of three sisters who are very different from one another.
