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...
Bravo! Our visitors are 
flashing their asses at us!
!برافو! زوّارنا يديرون ظهورهم لنا
B! Unsere Besucher zeigen uns den Arsch!
¡Nos están mostrando el trasero, sean
hospitalarios y llénesenlos de plomo!
¡Nos enseñan el culo,
sed hospitalarios y llenadlos de plomo!
Compagnie B !
Ils ont enfin sorti leur cul de l’eau !
Compagnia Bravo!
I nostri visitatori hanno il culo scoperto!
Esquadrão Bravo! Os visitantes
estão com a bunda de fora!
Эскадрилья Б, наши гости 
подставили нам задницы!