Two salvage operations anchor this look at the Baltic Sea Divers, a crew that works some of Europe's coldest, murkiest waters. The first job sends them to the Dar Ridge to raise a 30-meter measuring mast used to track climate data, a piece of equipment heavy enough to need a 20-ton crane, with strong currents and a closing weather window threatening the lift before the base plate proves close to too heavy for their gear. The second operation is smaller in scale but tighter in space: a team works to retrieve a 60-kilo sonar unit lodged beneath a ship's hull, and a trainee diver's mistake sends it dropping unexpectedly, forcing a quick recovery plan. The film follows the divers underwater and on deck as they read currents, manage rigging, and improvise when equipment and conditions do not cooperate. It is a straightforward, procedural account of commercial diving work, focused on the mechanics of moving heavy, awkward objects out of the sea rather than any larger argument.