Lt. Suzuki dedicates all of the police resources to finding the killer of a rich white girl who died of exposure after an eight-month disappearance. The girl gives birth before she dies, and Liv soon starts having maternal feelings toward the baby and everyone else around her. Meanwhile, Major tries to find out more about Julien, and Liv and Lowell's relationship changes when he eats the wrong brain.

Liv, Detective Babineaux and Ravi investigate the mysterious death of a peewee basketball coach. Liv, consumed with overzealous coach brains, gives Major a much needed pep talk. Meanwhile, things get a little crazy when Blaine and Ravi are forced to work together to recreate the cure. Lastly, Detective Babineaux receives a surprise visit from Suzuki's widow Helen.

Liv and Babineaux investigate the death of a highly competitive student; Liv becomes more like the girl she used to be after consuming the victim's brain; Blaine looks to Ravi for help.

Liv and Blaine come to the rescue of one of their own. They consume the brains of a conspiracy theorist and paranoia ensues. Meanwhile, as they continue to search for conspiracy theories that may or may not exist, Liv researches Major's new friend. Finally, Ravi makes a surprising discovery of his own.

While tracking the murder of a hockey player, Liv stumbles onto Chase Graves’ evil plan. Meanwhile, Major is forced to make a horrible decision. Lastly, Peyton tries to contain a volatile situation.

While investigating the death of independently wealthy, 19-year-old, Harris Miller, Liv, on brain à la Ferris Bueller, attempts to cheer up Ravi who has been spiraling after learning some unfortunate news. Meanwhile, after a nasty fall at the crime scene, Clive is forced to continue his part of the investigation via FaceTime. Lastly, things are suddenly going from bad to worse for Blaine.

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.