A summary of the story of a young German engineer, Paul, stationed on a U-boat during the last year of the First World War.  Dealing with the stress of operating a submarine and fading morale, as well as his crewmates all at each other's necks due to the poor conditions and unwinnable scenario, young Paul is scared about his future aboard this vessel. The game revolves around the psychology of being a WW1 German engineer sent out in the North Sea to get intelligence and, if needed, eliminate enemy cargo ships and armoured ships. Dealing with the fears of claustrophobia and thalassophobia, and being stuck aboard this nightmare with four other souls who are losing morale and their own sanity on the vessel.