A visiting Chinese dignitary has gotten death threats and Section 9 is elected to provide security.  Chief Aramaki visits the grave of an old friend.  his friend's daughter tells him about her younger brother behaving strangely.  He tells her that's out of his jurisdiction.  It later becomes his problem when Section 9 finds out he's the prime suspect in the assassination attempt.  A little more digging shows that Aramaki’s old war buddy has somehow been downloaded into his son's cyber brain and he's the one attempting the assassination.  Now it's up to Section 9 to stop it and to try and save the boy's life in the process.