While diving in a remote French lake, a couple of YouTubers who specialise in underwater exploration videos discover a house submerged in the deep waters. What was initially a unique finding soon turns into a nightmare when they discover that the house was the scene of atrocious crimes. Trapped, with their oxygen reserves falling dangerously, they realise the worst is yet to come: they are not alone in the house.
James Jagger
as Ben
Camille Rowe
as Tina
Eric Savin
as Pierre Montégnac
Carolina Massey
as Sarah Montégnac
Alexis Servaes
as Mister Montégnac
Anne Claessens
as Madame Montégnac
Marie Caffier
as Scandinavian Couple
Marie Bernard
as Scandinavian Couple
