Mycroft isn’t a city known to be full of strange secrets, but for the police, it’s all they can see. Though she is part of the organized crime division, police sergeant Natasha Diamond is asked to work a missing-persons case alongside two private detectives, Yuji Toraiwa and Kaino Samejima. As the case progresses, Natasha realizes the two are actually more than they appear. They later reveal themselves as being two vice-officers from Shinobi Inc., a detective agency that employs traditional espionage tactics in its investigations. With the aid of other agents and working in tandem with the police, the Inc. makes sure there’s nowhere to hide! What more secrets will be uncovered?