That Vampire Show follows Kat Wright, a high school senior who is obsessed with the hit TV show, “Bloodlines.” After winning a fan fiction writing contest for the show, Kat is given the chance to visit set and meet the cast and crew. When the trip doesn't go as planned — and she and the creator of the show, Warren Young, have a major fight — Kat's life and the future of “Bloodlines” both spiral out of control.