The first ever 2nd Generation Angeloid to be created by Nymph and Astraea's former master in Synapse, 2nd Generation: Type Epsilon Angeloid Chaos (or just Chaos for short) is the first in a whole new breed of Angeloids that features new, more advanced abilities over those of the 1st Generation series. Created as the first of a new line of advanced, upgraded Angeloids that differ in design compared to Daedalus and her 1st Generation models. Chaos is tasked with several missions by her master, the Man of Synapse. She is sent down to Earth to the town of Sorami, Japan to eliminate Tomoki Sakurai and to locate and kill both of the Angeloids that have "betrayed" Synapse for her master.