In UteroIn Utero

"Twelve years after a disastrous explosion, young Hailey is dropped off by her mum at a holiday camp in a dilapidated shopping mall. Alienated from the other kids, she connects with an eerie older teen named Jen...but soon dark horrors awaken, and the two new friends are caught up in a cataclysmic battle between two terrifying creatures who have been lying dormant all this time"--