An Eurasian lady named Suou watches a meteor bathe alongside along with her twin brother Shion and their father, however issues go awry when a meteor crashes into their location. Two years later, Shion has became a contractor from the incident, confined to a wheelchair attributable to his renumeration. He is locked away into the household dwelling for safekeeping, whereas Dr. Pavlichenko spends his time researching into his son’s situation and the contractors, forbidding Suou to speak or see her brother. Things go usually of their lives till Suou’s finest good friend Tania turns into a contractor and assaults her boyfriend Nika when he stops her from leaving. Hei aka BK-201 reappears in Russia after a FSB squad tries to seize Shion alive; April additionally reappears in Russia on a mission to safe Shion.