As Florida authorities were evacuating a small town ahead of a Category 5 hurricane, Haley Keller (Kaya Scodelario) was fighting to get in-trying to locate her unaccounted-for dad Dave (Barry Pepper). Making her way to his house, she finds him injured within an attic crawlspace... and, now, their survival is in question, both from the rising floodwaters and the hungry alligators trolling within. Alexandre Aja's terrifying two-hander co-stars Ross Anderson, Anson Boon.