"Okay, I will. I love you too, dad."
Just an ordinary telephone conversation with her father.
It was quiet and peaceful, just like any other day.
She never imagined that her world would be turned upside down so suddenly...
All a sudden, without any omen, not knowing the reason, it comes.
That ordinary happines gets lost.
The world changes drastically as if it is eroded by a nightmare,
and Heather gets trapped into it.
The happy crowd noise turns into dismal silence.
The only thing she can hear is the footsteps of strange creatures.
What happened? ... No one is there to answer the question.
Trapped in that lonely and insane world, the only thing Heather can do is to escape from it.
She doesn't even know where to go...
To survive, she uses her gun to kill grotesque monsters that attack.
"They've come to witness the Beginning.
The rebirth of Paradise, despoiled by mankind."
A strange lady says that to Heather during this confusion.Only one person...
Beginning? Paradise? While not being able to question this meaning, the lady walks away...
As if the words were some trigger, the world further sinks deeper into nightmare.