'Isabelle Humphrey resents her half-brother, Jason. One afternoon, she is forced to take him to the movies. Once settled into her seat in the cinema, she falls asleep. But when she wakes up, she’s shocked to discover that she’s completely alone. Wondering where everyone has gone, she leaves and finds herself completely abandoned in the world’s largest mall. She soon discovers other people left behind: two police officers, an old farmer, a shop owner, a paranoid young man, and her school bully, Miranda. All exits have been sealed shut, and all electrical devices refuse to work. There’s an oncoming storm that threatens them with a blackout, but they soon discover that they’re not completely alone: someone or something is watching them. A dark supernatural force is at work, and Jason proves to be the key. It’s up to Isabelle to be brave, find Jason, and end this horrendous nightmare once and for all. It’s a race against time for survival as this violent force takes them one by one.'
(Source: publisher's blurb)