In December 2004, close-knit family Maria, Henry and their three sons begin their winter vacation in Thailand. But the day after Christmas, the idyllic holiday turns into an incomprehensible nightmare when a terrifying roar rises from the depths of the sea, followed by a wall of black water that devours everything in its path. Though Maria and her family face their darkest hour, unexpected displays of kindness and courage ameliorate their terror.
Naomi Watts
as Maria Bennett
Ewan McGregor
as Henry Bennett
Tom Holland
as Lucas Bennett
Samuel Joslin
as Thomas Bennett
Oaklee Pendergast
as Simon Bennett
Marta Etura
as Simone
Sönke Möhring
as Karl Schweber
Geraldine Chaplin
as Old Woman
Ploy Jindachote
as Caregiver
Jomjaoi Sae-Limh
as Red Cross Nurse
Johan Sundberg
as Daniel
Jan Roland Sundberg
as Daniel's Father
