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.
I can't imagine you've 
forgotten your own mission.
Du hast doch sicherlich
 nicht deinen Auftrag vergessen.
Imagino que no habrás
 olvidado tu misión, ¿no?
Imagino que no habrás
 olvidado tu misión, ¿no?
Tu n’as tout de même pas
oublié ta mission, n’est-ce pas ?
Não consigo imaginar você 
esquecendo de sua própria missão.