In a war-torn alternative future, Nathaniel Shui, a smart and curious archivist, is hired by the Unification Council with a mission to find retired Colonel Bill Butcher, the former commander of the special unit, Odin's Spear. His objective is to uncover the truth behind what happened at Kasserine Pass, which led to the world's first and only limited exchange of thermonuclear weapons. The Unification Council is determined to uncover the truth, even if it no longer exists. Shui's quest is to find out what really happened at Kasserine Pass.