On April 19th, 1973, a race of extra-terrestrial lifeforms launched a landing unit from the moon, which touched down on Earth, in central Asia. Ever since, mankind has been engaged in a losing war against this alien species, known as the BETA, as they have gradually expanded outwards across the globe. After 20 years of non-stop fighting, the war has reached the shores of Japan...
Not to mention, with the 
fall of western Japan,
،دون ذكر أنه، مع سقوط اليابان الغربيّة
Und durch das Chaos in West-Japan
Además, con la caída del oeste de Japón,
Además, con la caída del oeste de Japón,
L’ouest du pays
est aux mains de l’ennemi.
Senza contare che non sapevano 
dove sarebbero finiti,
Sem falar que, com a queda
do oeste do Japão,
Да и из-за хаоса после взятия западной
Японии, им будет трудно найти место.