CaptainAmbrosecomesfromalonglineofdistinguishedsailors...butisalltoosusceptibletoseasickness.Afterthewar,hebuyshimselfanauticalcommandonshore;adecrepitamusementpierattheBritishresorttownSandcastle-on-Sea,whoseprimtowncouncilhasoutlawedarcadegamesasaformofgambling!Runningthepierlikeanavalvessel,thecaptain'sdeterminationtomakeitamodern,goingconcernmeetssteadyopposition.Butwithanunexpectednewally,hepursuesaremarkableschemetoliberatehisshipfromlandauthorities...