One of Tommy Trinder's best loved comedies. Whilst on shoreleave, Trinder and 2 fellow sailors (Claude Hulbert and Michael Wilding) get very drunk and end up on the wrong ship. When they realise their mistake they scramble off it and onto their warship, H.M.S. Ferocious. However, it is not the Ferocious but a German battleship! Comedy ensues as they try to pass themselves off as German sailors, get caught and then try to trick the entire crew into abandoning ship.