Liv consumes the brain of a murdered live-action role-playing knight in order to solve his murder; Peyton uncovers a truth about Liv; Major embarks on a mission.

There's a zombie serial killer on the loose and new Seattle is on lockdown. Liv is trapped in the morgue on white rapper brain and Clive and Ravi are playing Dungeons & Dragons. Meanwhile, Blaine concocts his most sinister plan to date. Lastly, Major is on the hunt for the killer.

When Liv consumes the brain of a vice detective who doesn't play by the rules, her newfound recklessness gets her into trouble. Meanwhile, Major is coming really close to discovering Liv's secret.

Liv does Clive a solid and agrees to consume germaphobe brain during flu season. Ravi continues his role as surrogate father to Isobel. Major finally gets to the bottom of things, and Chase continues to spiral out of control. Lastly, Peyton struggles with a very important decision.