Lost Girl focuses on the gorgeous and charismatic Bo, a supernatural being called a succubus who feeds on the energy of humans, sometimes with fatal results. Refusing to embrace her supernatural clan and its rigid hierarchy, Bo is a renegade who takes up the fight for the underdog while searching for the truth about her own mysterious origins.
Bo has been living on the run from her strange appetites and what havoc they wreak. After leaving someone she kills out in the open, she is contacted by a group called The Fae. She discovers who and what she is, and is told to join one of two tribes.