Watch Girl vs. Monster
Skylar is the singer of a teen rock band ready to play at a big Halloween party, until her parents forbid her from leaving the house, going so far as to activate their alarm system. Undeterred, Skylar cuts the power to the alarm and sneaks out. She unwittingly releases a monster her parents have kept locked up for years. That's when Skylar learns the truth about her family. They are monster hunters, and it is up to her to stop the inhuman creature she accidentally freed.