Kai's duty as a member of the Human Protection Agency is to ensure that the four races from The Great War are kept sealed in their graveyards. Humanity has been at peace for 100 years, until one day a portal opens and the world he's known ceases to exist.
There was a war called the Great War 
of the Five Races, and humanity lost.
اندلعَتْ حربٌ تُدعى بالحرب العظيمة
للأعراق الخمسة، وخسرت البشريّة
Es begann mit dem
großen Krieg der fünf Rassen, …
La humanidad perdió
la guerra de las Cinco Razas.
La humanidad perdió
la guerra de las Cinco Razas.
Eh bien, les humains ont perdu
C'è stata una guerra,
la Grande Guerra delle cinque razze.
Houve uma guerra chamada Grande Guerra
das Cinco Raças, e a humanidade perdeu.
Была Великая война пяти племён.