Four months have passed since the wedding crash punctuating season five. The toys are still banned from playing Halo online. Master Chief resorts to drawing on the walls and burning holes in the carpet to fill his days. The Arbiter, having not spoken to Claire in some time, has become a full-blown alcoholic and has convinced himself he has absolutely no control over his life. Greg has been nowhere to be found. Meanwhile, on the online battleground, to combat a rise in in-game cheating and hacking, the OMN (Online Multiplayer Network) establishes an organization named the TOSERS (Terms of Service Enforcement/Response Squad), consisting of moderators of varying ranks and within different divisions who are deployed to police online matches. In response, a ruthless clan of hackers known as Chaos Theosis rises and threatens to wreak havoc online with an illegal software patch commonly referred to by underground hacking communities as FragBan, which allows patched players to place an irreversible console ban on any player he or she frags in the game as well as steal that player's personal account information, unless TOSERS is immediately dismantled and its moderators are removed from gameplay...

Master Chief follows through with his decision to apply to the TOSERS in-game police organization to have his online multiplayer access reinstated. Arbiter refuses to join him, unable to shake himself out of his depressive funk.

Master Chief and the Arbiter form an uneasy alliance with Cody and Cameron, fellow TOSERS applicants and once bodyguards of Trent Donnovich at his wedding, to fight off the hacker clan Chaos Theosis.

After Arbiter catches Master Chief making a mysterious phone call, the two set out to moderate Halo: Reach online play as newly recruited TOSERS.

The Arbiter and Master Chief begin their duty as level negative one TOSERS in-game moderators. Meanwhile, the Chaos Theosis clan continues its merciless rampage throughout online matchmaking.

Master Chief collapses from exhaustion after a full day of moderating duty. The Arbiter can't sleep and decides to resume play through the night -- and a newly promoted Claire is assigned as his supervisor.

Arbiter makes a last-ditch effort to retain the toys' positions on the TOSERS moderation force.

Master Chief and the Arbiter are in the belly of a private hacking server at severe risk of having their console irreversibly banned and must find a way out, but not without the hack files they came for.

Chaos Theosis attacks the TOSERS main operations server, killing every moderator in sight. Meanwhile, the toys are still stuck in a power outage.

Master Chief and the Arbiter, having pinned up mugshots of each member of the Chaos Theosis clan on the apartment's front door (their "hit list"), label each with their gamertags and settle on tracking and taking out the youngest member of the clan first, Claire's killer -- Adam.

Kylie confronts Duncan regarding his avoidance of the tasks assigned to him by Clyde, and the toys bicker over who to make their next target.

Master Chief and the Arbiter target the remaining Chaos Theosis members on their hit list.

Master Chief and the Arbiter face off with Trent Donnovich, who has been revealed to be behind Chaos Theosis and their attack on the network.