In the Roselaid Empire, power is measured in sanity.

In a world governed by the cogs of psychi and ishi, battle is a measure of technique, not strength.

Coda Hastalune is a prodigy of the Lipford Academy, a student with a "careless" reputation and a troubled mind. But when a routine mission to Stalgate dissolves into a shower of blood and gore, Coda realizes the gap between a student and a monster is wider than he imagined.

Meanwhile, in the blood-stained alleys of the capital, Chief Detective Myralda Scorn of the DIR is tracking a psychi wavelength that doesn't exist.

As the Green Line pulses with the frequency of an approaching war, the prodigy and the detective find themselves on a collision course. One is burning his mind to gain power; the other is risking her life to uncover the truth of why that power is rotting the world from the inside out.