Earth had become so over-populated that colony ships were dispatched all over
the universe in order to secure other habitable places humans can migrate to.
One such colony ship called the Mesopotamia crashes to a planet called Terra
II.
The good news is, Terra II is conducive to human life. The bad news is, only
six people survived the crash... and they're all men!
These six men decide to work together to make Terra II a world where humanity
can thrive, but for all their efforts they can only multiply in numbers
through cloning.
Thus, six countries are established where all the citizens are men. In memory
of women, the men produce marionettes -- female androids which help the men
with their everyday lives.
A young teenage boy named Otaru Mamiya is but one of the many residents of
Japoness, one of the all-male countries that were established. Otaru
unwittingly awakens three very special marionettes, namely Lime, Cherry, and
Bloodberry.
Unlike other marionettes, these three are have feelings and free will. They
are almost human -- laughing, crying, getting angry... but it seems that they
have higher purpose, something which Otaru could never have been prepared for.