The movie begins on the day before Halloween with Skylar, a fearless 15-year-old teenager with a powerful singing voice, prepares for the ultimate costume party with her best friends, Henry and Sadie. The plan is for Skylar to sing at the party, with rock band member Ryan Dean. Skylar is crushed when the next afternoon, her parents make her stay home and even activate an alarm system to keep her in. She attempts to sneak out of the house by cutting the power so the alarm system won't work. That unfortunately unleashes a monster named Deimata (that was contained in her parents' monster containment unit) who is determined to feed the fear on Skylar and her family forever. As Skylar’s world is turned upside down, she learns that her parents have been keeping a big secret – that she comes from a long line of monster hunters. She is the 5th generation. Now, it’s up to Skylar and her friends to channel their inner strength and conquer more than just this monster. Every person has their own personal monster, which feeds on their fear.