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.
Did you wait all this time 
for our club to be over?
Hast du gewartet, dass unser Club zu ende geht?
¿Esperaste todo el tiempo a que
 terminara mis actividades del club?
¿Estuviste esperando a que
 terminara mis actividades del club?
Calmarine ? Tu as attendu
que nous finissions le sport ?
Você esperou esse tempo todo pelo 
fim das atividades do nosso clube?