After the "Another" incidents which sent Den City into a panic, one of the masterminds behind the plot, Baila, one of Hanoi's Three Knights, was sent to a detention facility and imprisoned. There, while under strict surveillance, she is visited by a certain man...
They say escape is impossible 
from the world's toughest prison.
Das sicherste Gefängnis der Welt,
aus dem ein Ausbruch unmöglich sein soll.
Es la prisión más segura del mundo.
Dicen que es imposible escapar.
Dizem que é impossível escapar
da prisão mais difícil do mundo.