一艘在深海被困的潜艇上突然出现一名神秘樵夫，而这艘潜艇带着不稳定的货物，已经被困在水下好几个月了。随着陷入恐惧的船员们穿过遇难船的走廊，发现自己正在接近最黑暗的恐惧的源头。A never-before-seen woodsman mysteriously appears aboard a submarine that's been trapped deep under water for months with an unstable cargo. As the terrified crew make their way through the corridors of the doomed vessel, they find themselves on a voyage into the origins of their darkest fears.