A crew explores myth about deep lake where people vanish. As they investigate, they discover terrifying secrets about lake's sinister history and perilous consequences for those who explore its murky depths.

In the Pacific Northwest, a crew investigates the mysterious legend of a deep lake where the cold and stillness claim lives and keep secrets. But as they delve deeper, they uncover a horrifying truth about the lake's dark past and the fate of those who enter its depths.