Kammala jumla mai zuwa: Babban Kwamandan Kwando na Kanada Jamie Wilson (Lloyd Bridges), ya shirya wani mummunan harin da aka hade a kan tashar jiragen ruwa na Faransa na Le Clare; idan aka hallaka shi, za a kwashe 'yan Jamus daga tashar jiragen ruwa guda daya da za su iya yin amfani da manyan jiragen ruwa. Shirye-shiryen Wilson, mai suna "Operation Mad Dog", shi ne ya yi amfani da jirgin ruwa mai dauke da ton na fashewa a cikin ƙofar waje na tashar jiragen ruwa, yayin da kwamandojinsa ke haifar da rikice-rikice ga kayan aikin tashar jiragen ruwa da kuma garuruwa, sannan kuma ya fashe fashewar fashewar fashewar fashewa. Wanda ke adawa da Wilson shi ne Kyaftin Owen Franklin na Royal Navy (Andrew Keir), wanda aka kashe dansa a kan bala'in Wilson na baya.
Dieppe-type kai hari a Faransa a bakin tekun a Le Plagé.