After Riona rescues her fellow agents and loses her friend in the process, she goes on a journey to find out who's behind the Private Soldiers Agency (PSA) and get rid of them as she promised. However, the journey does not occur without road bumps. Aside from dealing with trauma and guilt, Riona realizes that everything she knows is only a small piece of the puzzle. As she starts putting the pieces together, nothing can prepare her for the truths she'll discover and the battles she'll have to fight.