After a personal tragedy, Sarah joins her friends on a caving expedition in the Appalachian Mountains. But when a rockfall traps them deep underground, their adventure turns into a nightmare. As they search for a way out, the group discovers they are not alone—lurking in the darkness are savage, cave-dwelling creatures. With rising tension and dwindling trust, the women must fight to survive against both the predators and each other.
Shauna Macdonald
as Sarah Carter
Natalie Mendoza
as Juno Kaplan
Alex Reid
as Beth O'Brien
MyAnna Buring
as Sam Vernet
Saskia Mulder
as Rebecca Vernet
Nora-Jane Noone
as Holly
Leslie Simpson
as Crawler
Oliver Milburn
as Paul Carter
Molly Kayll
as Jessica Carter
Craig Conway
as Crawler - Scar
Tristan Matthiae
as Crawler
Mark Cronfield
as Crawler
