In Alcia everyone has a number tatooed on their body which counts a certain something such as walking a certain distance, helping others. When this number reaches zero, they are sent to the Abyss. Hina's mother was taken away from her when she was just a little girl and her last words was to seek the legendary heroes of the past Waste War...

It is the year 2050. Automatas are now part of human's daily lives. Derrida's father happens to be the creator and now he follows in his footsteps developing them at Rebuild. However, he and his friend Nathan discovers a fatal bug in the latest "DZ" models that could allow them to go out-of-control. Not only that, rumours were the models...