It's a dystopian world. The city's in shambles, covered in toxic waste and whatever muck is around. Nowhere is safe. You can't trust anyone. Your only chance at survival is to keep moving and stay on the run.

Your older brother, Jimin, is the only one you have left. You don't know where your parents have gone, they never came home and you've both just assumed the worst. He's decided it was best to leave home.

"Are your bags packed?" Jimin asks you, zipping up his own backpack.