After a scientist is murdered, Liv and Babineaux are surprised to learn where she worked; Ravi gets a visit from Blaine at the morgue; Liv finds out something about Drake; Major is confronted by Vaughn du Clarke.

Liv and Ravi are in need of help and find an unlikely ally in Blaine. Detective Babineaux and Dale Bozzio pursue a new lead on an old case. Meanwhile, when Major finds himself in a world of trouble, sleazebag Brant Stone comes to his rescue. Vaughn’s evil side reaches a whole new level of mean.

To help Clive solve the murder of an irresponsible narcissist, Liv consumes her brain and literally becomes a hot mess. Meanwhile, Peyton learns some shocking news. Lastly, Ravi experiences a major setback.

When Liv consumes the brains of someone from Ravi's past, not only does it have her wanting to sleep with every guy in Seattle, she also begins having some very intimate visions of Ravi. Meanwhile, Major is faced with a huge decision.

Liv, Clive and Ravi investigate the suspicious death of Cornell Piercey, the head of Piercey Corp, a successful traffic app company. Melissa Schultz, Cornell's ex-girlfriend, is now running the company, makes an interesting reveal to Liv and Clive. Meanwhile, Peyton is focusing on maintaining positive zombie PR in the city. Lastly, Blaine is intrigued when he meets Al Bronson of Bluster Magazine, as she is not at all what he was expecting.

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.