Five friends explore The Devil's Mouth cave system in Thailand for one last adventure before life in the real world begins. But they soon discover that something is hunting them under the water... fast, silent, and deadly. In the suffocating darkness, trust erodes, panic spreads and every wrong turn becomes a fight for survival.
Kathryn Newton
Sara
Lana Condor
Max
Nico Hiraga
James
Gavin Casalegno
Greg
Tommi Rose
Adrienne
Tayme Thapthimthong
Wat
Sahajak Boonthanakit
Captain
Harrison Luna
Ryan
