An invisible Willwear is causing massive damage in random attacks across Tokyo.  Unit 8 tracks the Willwear down to the quagmire zone, a hotbed of illegal immigrant activity.  The area is a lawless zone, so Sena is sent to infiltrate as a civilian garbage collector.  There, he meets an illegal immigrant from a equatorial nation, who he suspects of being involved in the attacks.  When he strikes up a friendship with the man, however, he's forced to choose between his personal feelings of respect, and his duty.
I couldn't just let something unfair happen—
—ما كنتُ لأسمح لشيء غير منصف أن يحدث
Wem Unrecht widerfährt,
dem sollte man helfen.
No podía dejar
que algo absurdo e injusto…
No podía dejar que algo
absurdo e injusto…
Devant une injustice, 
il faut intervenir…
È normale intervenire
quando accadono cose ingiu—
Não gosto quando coisas injustas aconte—