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 thought she was the normal one,
Ich dachte, sie wäre noch normal.
Pensé que ella era normal, 
pero quizás estaba equivocada.
Pensaba que ella era normal, 
pero quizás estaba equivocada.
Moi qui pensais qu’Ayumi était
plus honnête que son père…
Eu pensava que ela era do tipo normal,