The crew of PT-73 are in trouble again when Ensign Parker is mistaken for a pilot and gets shanghied into the Air Force.
When a group of terrorists takes over their naval base, the misfit sailors of McHale's Navy must band together to save the day. With a mix of comedy and action, they use their unique skills to outsmart the terrorists and protect their base.
During World War Two, the crew of a patrol boat called McHale's Navy find themselves in various misadventures and hilarious situations as they navigate the challenges of war in the South Pacific. From dealing with a debt to gambling with the Japanese navy, the crew must rely on their wit and camaraderie to survive.