Illya, Miyu, Kuro, Luvia, Rin, and Bazett all head to the mirror world underground in order to face the Heroic Spirit of the eigth card. Centered in the ley line and stocking up a vast amount of mana, the only strategy they have is to through all of their might against him and take him down with their first blow. They unleash all the firepower they possess against that Heroic Spirit, but--?!
What this is really about is that 
you need to calm down, Nee-san.
Du solltest dich besser ein wenig beruhigen,
vorsichtig ausgedrückt.
Creo que deberías calmarte un poco, hermana.
Creo que deberías calmarte un poco, hermana.
En prenant des pincettes,
Mettendola in maniera educata, 
dovresti darti una calmata, sorella.
Sendo sincera, é melhor você 
se acalmar um pouco, Nee-san.