The Metropolitan Police Department '0'section, known as an organization in the police department that investigates a closed case. Well-trained detective in the '0' section, Rei, is looking for her memory that was lost during the training, while also investigating a human traffic which young woman being a victim. One day, classified killer virus was seized by rising terrorists. To investigate this case, public safety sent Sarah Kodama who specializes in molecular biology and computer, to work with Rei but Rei refuses to work with Sarah. Sarah was curious about mysterious Rei, so she starts to collect Rei's information and goes to see Rei's former boss, Asami. However, the man who appeared in front of Sarah was an assassinator who contemplates destruction of '0' section. What happens to Sarah...!? What is in Rei's lost memories!?

"The Abashiri Family" are one of the most notorious mafia family members in the world. Even though their family consists of only five members, just the words "Abashiri Family" strikes fear in other gang members. The head of the mafia clan then decides to send to his cherished only daughter Kikunosuke to a boarding school. What the father doesn't know is that the boarding school are run by enemies of the Abashiri Family and they have no intentions of graduating their students