A man arrives in town claiming to be Dr Lewis' brother. However, after it appears that her real brother has gone missing, the unit is called in to investigate.
After losing her teaching job, Vanessa drives her family members crazy by spending all of her time hovering over them; Ryan and Kyle compete to see who knows more about zombies and how to survive an apocalypse.
Andre campaigns to be the president of the Gamma fraternity, but he must be willing to sacrifice his morals to win; Doug has a date with Sloane; Zaara is hung up on Drea.