The documentary accompanies the crew of the German U32 submarine on its journey from the Eckernforde naval base through the difficult-to-navigate Kiel Canal to Plymouth in England.

The documentary accompanies the crew of the German U32 submarine on its journey from the Eckernforde naval base through the difficult-to-navigate Kiel Canal to Plymouth in England. The tasks of the crew even push the hard-boiled soldiers to their limits, as our submarine documentary shows.