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Chaos has taken hold of the land in Mask of Truth as a conniving general has unlawfully seized the throne of the mighty Yamato Empire. The only ones that stand in his way are a couple of familiar faces who must rally different kingdoms together and fight against the powerful Imperial army.
On February 29, 2000, the Möbius meteorites fell on Earth. These meteorites brought a new form of matter known as Möbius Dust to Earth. The dust permeated Earth's atmosphere, leading to a miracle. The day the meteorites fell, nicknamed "2.29," accelerated the economic disparity in Japan. Before long, the Bloody War Alliance, discontent with this disparity, began committing acts of terrorism. Amidst all this, the police established the anti-RC special mobile unit and a joint anti-RC training school for the initial training of the unit members.