As Liv, Ravi and Clive race to finalize the cure, Peyton faces a showdown with Blaine, and Major takes a bold gamble to save Seattle once and for all.
While Major faces a changing of the tide in Seattle, Liv, Clive and Ravi undertake a mission impossible in Atlanta to retrieve the final zombie cure.
Liv and Clive investigate the death of an old school drag queen which leads Liv to eat and shift into the queen’s brain. Meanwhile, Ravi reaches out to Major with an interesting request.
While investigating the murder of private eye Mick Chisel, who was stabbed in the head with an ice pick, Liv consumes Chisel’s brain in hopes of breaking down how this gruesome murder took place.
Liv and Ravi each consume the brain of a very dislikable car salesman and inherit his competitive nature.
While investigating the murder of Eleanor Barba, a chef at a high-end restaurant, Liv consumes her brain and becomes an unrelenting perfectionist who knows just how to break a person to their very core. Meanwhile, Major is on a mission to find out who is betraying the commander.
A medical student who becomes a zombie joins a Coroner's Office in order to gain access to the brains she must reluctantly eat so that she can maintain her humanity. But every brain she eats, she also inherits their memories and must now solve their deaths with help from the Medical examiner and a police detective.