Twelve years ago, strange creatures called Heterodynes attacked Japan. In response to this threat the government contracted the construction of a giant defense mech. However, when the robot was finally completed, the Heterodyne threat had disappeared. The expensive robot was sold off to a defense corporation and became a mere tourist attraction and PR tool…

How the Heterodyne have suddenly reappeared and three undisciplined, part-time trainee pilots/full time PR office clerks, with no real battle experience, go against their superiors orders and engage the foe. With no regard for their careers, or the cost of repairs and damage claims, they aim to do what is right. But between their own corporation’s board members bickering over the costs of operations and the fact that their reckless heroism makes the Japanese military look bad; just how long can they keep their jobs, let alone the world safe?