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.
That's quite a step down from "Invasion Base."
Schon 'ne Stufe unter der Invasionsbasis...
Eso es todo un paso atrás respecto 
a la "base de la invasión".
Eso es todo un paso atrás respecto 
a la "base de la invasión".
Ce devait pourtant être
sa base militaire…
Isso foi realmente um passo para trás 
do que era "Quartel-General da Invasão".