Monsters (2015)

Jia Ying, a sharp but isolated real estate sales manager, finds her solitary life upended when she accidentally leaves her personal phone in a model room. As she enters the elevator, a sudden, violent crash occurs, trapping her amidst the wreckage. She survives with only a cracked work phone, a lighter, and her handbag. Managing to get a signal, Jia calls for help but can't recall important contacts. The elevator collapses again, injuring her leg. While desperately trying to reach someone, she unknowingly stumbles upon a hidden conspiracy and a terrifying presence lurking in the darkness.