2089 The Ambrosio-Rui Caganera High-Criminal Zone (ZOO) is a prison founded by a businessman who is one of the five richest people in the world. Serial killers and maniacs are imprisoned there without trial or investigation, and the location of this institution is strictly classified by the international government. What happens to criminals within the walls of prison is a chilling mystery for the population of the entire planet, because none of the prisoners were ever released to talk about it. Twenty-two-year-old Nemesis, convicted of mass murder, becomes a prisoner of this institution, where she has to get used to new, harsh living conditions. Tempered by the experience, she decides to take extreme measures - to run away! However, Nemesis's biggest nightmare is the head doctor of the ZOO!