Sennen Cove sits on the southwest tip of England, on a stretch of coastline that has claimed more ships than anywhere else in the country. The film follows the volunteer crews who launch into that water when something goes wrong, ordinary people who drop what they are doing and head out into storms to bring sailors home. It shows the training, the waiting, and the callouts themselves, with the crew's own accounts of what it feels like to take a small boat into big seas at night. The history of wrecking along this coast runs underneath the present-day rescues, giving weight to why this particular cove still keeps a lifeboat station staffed by people who are not paid to be there. It is a portrait of a specific community built around a hazard, told mostly through the people who keep showing up for it.