In a world of only males, they have created female looking marionettes (androids). A handful of them have been given special 'hearts' called maiden circuits that give them emotion and human personality. Three of these are found by Otaru, and they soon are caught up in a war against Lord Faust and his 3 'human' marionettes.
Life has returned to normal for Otaru and the gang when suddenly, the Saber Dolls appear! It seems Faust has sent them to learn how to be more human...poor Otaru.
Lorelei learns a valuable lesson, and tries to repair Tiger's maiden curcuit. All the while, a mysterious thief is plundering Japoness. What will all become of this?
Marine begins to adjust to life in Japoness, with one minor acception, she's afraid of men! All the while, dark tidings rage throughout New Texas, what could this all mean?
A new enemy surfaces, as Marine begins to discover her special power. It becomes quite apparent that Marine possessess power well beyond that of the other six. Why is she here though, or better yet, where did she come from?
Otaru and Lorelei, kidnapped!? How will the Marionette's save their friends? Faust also comes to save the day, but who will save him? ...and what about Tiger...?
Marine's secret is finally revealed, as Terra II faces absolute destruction. There's only one way to save the planet, But how can Otaru ask a friend to make the ultimate sacrifice?