The Deep House (2021)

Plot

A couple of YouTubers, known for their underwater exploration content, stumble upon a submerged house in a secluded French lake. Initially excited by their remarkable discovery, their thrill rapidly dissipates as they uncover the dark history of the dwelling, linked to horrific crimes. As they explore, they find themselves trapped with dwindling oxygen supplies, facing a chilling realization: they are not the only inhabitants of this eerie abode. What began as an adventure transforms into a desperate struggle for survival against unseen horrors lurking beneath the surface.