Three sisters who can't stand each other are forced to sail an airship across a world hunting Galileo's lost sketches, and the show actually commits to making them argue about how to solve problems instead of magically getting along. The art direction wraps everything in a warm, lived-in aesthetic that makes you believe in the world they're running through, even when the plot repeats itself. By episode five you'll know exactly what the next arc looks like, but the chemistry between Hozuki, Kazuki, and Hazuki carries you through anyway, until the ending pulls the rug out and offers almost nothing in return.

Hozuki, Kazuki, and Hazuki are three sisters descended from Galileo Galilei, and their personalities and tastes could hardly be more different, so they rarely agree on anything. Their lives change when a mysterious organization suddenly attacks them, hunting for the Galileo Tesoro, something the famous scientist was said to have found. Still confused about what is happening, the sisters flee aboard an airship they built themselves. Working together in a crisis is hard when they are always at odds, and questions pile up: what is the Tesoro, what does the organization want, and what will become of the bond between the sisters? The result mixes action, mystery, drama, fantasy, and science fiction.