Bazett's barrier was supposed to prevent surprise attacks from the dolls, however Illya finds a little girl, Erica, sneaking into their school. For some reason Erica calls Illya "Onee-chan", and the two of them quickly hit it off. Meanwhile, a man claiming to be Erica's father appears. He seems kind at first glance, and while he came to pick up Erica, he's also...?!
Like talking about how we'll 
storm the enemy camp.
Wie wir in die feindliche
Basis kommen, zum Beispiel.
Como cuándo asaltaremos la base enemiga
Como cuándo asaltaremos la base enemiga
Un plan pour envahir l’atelier,
par exemple,
Ad esempio, di come attaccare
la roccaforte nemica...
Por exemplo, como nós 
atacaremos a base dos inimigos.