1824年成立的皇家全国救生艇协会（Royal National Lifeboat Institution）是提供救生服务的慈善组织，现有5000名志愿者，近200年来共营救超过14万人。

A group of friends take their recently sober friend, to the remote Hills to help him stay clean. But when eerie events unfold and people start disappearing, they must question whether it's the Boogeyman or their own unraveling minds.