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 won't happen!
Das wird nicht passieren.
¡Eso no pasará!
¡Eso no pasará!
Ce n’est pas vrai !
Isso não vai acontecer.