During the Soviet-Afghan war, a Soviet soldier became a CIA agent, leaking information while stationed at OKB Zero. After discovering XOF's plans to use vocal cord parasites, the agent went into hiding among the CIA's mujahideen allies. The agent feared that he would be killed for knowing too much, unaware that XOF's plans were actually independent of the CIA, and also felt regret that his actions may have placed his Soviet comrades in danger. After the death of XOF's commander, Skull Face, OKB Zero was retaken by the Soviet forces, with the agent being suspected of having returned to the base. The agent tried to cut his ties to the U.S. military and rejoin, but he ended up ambushed by unknown individuals, forcing him to go into hiding again.