The owner of Minamikaze has invited the girls of Lemon to his home, once there the mood changes drastically.  How can the girls escape?  Squid Girl is suffering from amnesia and everybody is trying to convince her she is an alien, girlfriend, or sister, but what about invader?  The Invasion Club has been formed, join and watch how they systematically invade the city.
If you connect the three, the interior area can
Wenn man die drei Punkte verbindet,
 könnte man den Zwischenraum
Si conectas los tres, podemos decir que el área
 que se forma es el territorio del club.
Si conectas los tres, podemos decir que el área
 que se forma es el territorio del club.
Si je relie ces trois points,
Se você conectar os três, 
essa área do interior