After eating the brain of their newest John Doe, Liv gets a vision of Clive as a dirty cop working with a gang to find a rat in their organization. Meanwhile, Major gets a new roommate, and Blaine expands his business operation.

Liv eats rotting brains to get a lead on the murder of an agoraphobic Internet troll and MMORPG player. Meanwhile, Major continues looking into Jerome's disappearance, and Eva makes the acquaintance of Meat Cute's owner.

When someone close to Major dies of an apparent suicide, Liv consumes the brains resulting in a mix of reality and paranoia. Clive questions Major and learns of a secret computer file that may contain important details in the investigation – and finding the killer.

Four teenagers hit Sebastian shortly after he becomes a zombie, and he kills one of them. When the body turns up, Liv eats the brain and tries to find out who is responsible. Meanwhile, Ravi and Peyton plan a trip to San Francisco, but Liv gets a visitor who interrupts their plans.