In the year 3499, programmed UNION Soldier 034 infiltrates the Separatist City of Subterra in search of the Psion Machine, humanity's most sought-after and cryptic super technology. The mission falls apart when he finds that he and the infamous machine share a puzzling bond.
Back with Stone Corp., 034's bizarre dreams and newly awakened mind cause him to question his allegiances, while Cole faces his father following his failure to obtain the Psion Machine. When Cole organizes a second assault, the mission commander elects to bring 034 along, forcing him to make the first real choice of his life.