The story of a young man who works for the Scottish coastguard where his main duty is to capture smugglers. One foggy night while his partner is out sick he gets a telegram informing him that several boats would be headed his way. As the coastguard officer is getting ready to confront the smugglers his fiancé tells him that her father is having money trouble and that he is being forced to loan his boat to the smugglers. Torn between her love for the coastguard officer and her love for her father the young woman sets out on a desperate mission to try and keep them both safe.