Action, Seinen, Psychological, Drama, Tragedy
- Chloe escaped from prison with three adult inmates when she was a little girl
- She returns years later to find her younger brother Rock whom she had to leave behind
- A unique and immersive story about a grand escape from a battered industrial city-like prison
In a prison so big that it is called a city, all sorts of criminals have been amassed. Due to the inescapable walls, the population only continues to grow. Within are a pair of siblings - a young girl and a recently born boy. What will be their fate in this desolate, cold city...? A story of hope and struggle begins.