The year is 2314, two years after Setsuna F. Seiei defeated the Innovator Ribbons Almark. The world is starting to move toward peace, and other people around the world are beginning to Innovate. However, an abandoned probe which went on an expedition to Jupiter 130 years ago suddenly returns to Earth, though there appears to not carry any sign of life aboard. Soon after, Earth becomes the target of dangerous aliens called the Extraterrestrial Living-metal Shapeshifters (ELS), who have the ability to assimilate Earth's technology. Celestial Being returns to combat the alien invasion with humanity's fate hanging in the balance. Written by Anonymous

A.D. 2400, DEVA's central council detects an incident of unauthorized access into their mainframe. Someone on Earth was trying to hack into the system. The only information DEVA was able to retrieve was that hacker referred to themselves as "Frontier Setter." To investigate the mysterious hacker's motives, the high officials of DEVA dispatch system Security Third Officer Angela Balzac to the Earth's surface. Equipped with a prosthetic "material body," Angela attempts to make contact with a local agent Dingo, but what awaited her instead was a swarm of Sandworms now infesting the Earth's surface. Angela intercepts the gruesome pests with her exoskeleton powered suit Arhan.