With the world under attack by deadly creatures who hunt by sound, a teen and her family seek refuge outside the city and encounter a mysterious cult.

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.