Tancredi Gilmor is one of the Law Scholars at the Tribunal of Ahthaza, the capital planet of the subjugated Kritas race. When the Tribunal adopts tougher measures against the mounting turmoils, and the marines tighten their grip on the population, violence escalates and Tancredi is confronted with the brutality of the space marines' oppression; his steadfast loyalty to The Law falters and puts his role within the Tribunal at risk.Tancredi's behavior intrigues Mekte, a young female Kritas who sees in him the hope for a change. As a member of the Kritas insurgence, Mekte risks everything to meet with Tancredi in secret, believing that together they can and must change the world. Tancredi and Mekte's worlds clash, everything opposes them, as a particle and its anti-particle, but when they collide powerful things happen.