Liv has discovered there are more zombies living in Seattle than she previously believed. In fact, there's a private military contractor employing a small zombie army, and that army is preparing for the day humans learn of their existence. Major was exonerated for the crimes of the Chaos Killer, but is still considered a pariah. He manages to land a job with the one and only place that will hire him. Meanwhile, Blaine is accused of lying.
When Liv, Clive and Ravi arrive at the scene to investigate a fatal car accident, they begin to suspect foul play was involved. Both starving, Liv and Major consume the brains of the accident victims, a well-meaning father and his angsty teenage daughter. Meanwhile, when Clive is brought in for questioning about a family that was murdered, he's forced to reveal his past history with them. Lastly, Peyton extends an olive branch to Ravi, and Major hits a road block in his search for Natalie.
To help Clive solve the murder of a lifestyle guru, Liv consumes his brain and takes on his zen approach to life. Ravi's old boss, Katty Kupps, is getting closer to discovering the truth while also getting closer to Ravi. Meanwhile, Blaine and Peyton continue their budding friendship, much to Ravi's dismay. Lastly, Major is struggling a bit at his new job.
Clive's patience is tested when Liv consumes the brain of a murder victim who had the reputation of being the ultimate office gossip. Meanwhile, Blaine and Peyton continue to grow closer as they wait to see if Ravi (Rahul Kohli) is able to reverse the effects of the cure. Lastly, Major is one step away from fulfilling a promise.
When Liv (Rose McIver) and Clive (Malcolm Goodwin) work together to solve the murder of a very charming, but womanizing, preschool teacher, things get interesting when they bring his jealous girlfriend Piper (guest star Shenae Grimes) in for questioning. Meanwhile, Peyton (Aly Michalka) is assigned a very interesting case. Lastly, Blaine (David Anders) finds himself in a bad situation. Rahul Kohli also stars. Shenae Grimes (90210) guest stars.
A dungeon master is killed and the probe reveals that he was up to more than playing in his mother's basement. Meanwhile, Blaine's experiment does not go as planned; and Ravi stumbles across some new information that could prove deadly.