After laying some unusually harsh punishments on McHale and the 73 Crew, Binghamton mistakenly gets the impression that McHale and his men are out to kill him.

Parker is feeling somewhat depressed, after getting scared during a chase after a Japanese patrol boat, especially after Binghamton accuses him of cowardice. But Binghamton changes his mind, when Parker – During a test run, on the 73 – Spots a German U-Boat, and goes after it.

A regulation-quoting lady Ensign tries to help McHale and the Crew make some much-needed money, by providing the participants for a beauty contest, and winds up helping them bag a German submarine, in the bargain.

Parker requests a transfer, when a cute blonde Nurse he's involved with unintentionally demoralizes him. So, McHale, The Crew, and the Nurse work out a plan to make him feel better about himself.

Binghamton fakes an illness, and checks into the base hospital, appointing McHale as temporary Base Commander, to face an unscheduled inspection by a tough Admiral. But Binghamton's plan backfires, when McHale and The Crew manage to make it through the inspection, and turn the tables on The Captain.

During a search for some stolen goods, while McHale and the 73 Crew are out on a recon mission, Binghamton catches Fuji, and holds him as a spy. McHale and the boys then cook up a complicated plan to spring him.

Tinker is arrested for the theft of Binghamton's printing press, and The Captain taps Parker to be Tinker's Defense Counsel, in a trial which Binghamton, himself, will preside over. Parker and McHale must then stall the proceedings, while Gruber and The Crew execute a plan to get Tinker off the hook, with a bit of creative evidence-tampering.

Parker - A dead-ringer for an important British General - Agrees to put his life on the line, by posing as The General, to divert the attention of spies, in New Caledonia, while the real General carries out a crucial invasion of a Japanese-held island.

In temporary command of the base, while Binghamton recovers from a broken leg, and drunk with power, Carpenter gets the goods on The Crew, and has them up for Court Martial on several serious charges. McHale and Parker must then scheme to get Binghamton back in command, and The Boys off the hook.

After the guys swipe Binghamton's dictation machine, Parker is nailed for the crime, while in the process of returning it, and The Captain throws him into the brig, pending Court Martial. Parker must then work with McHale and the boys in a complicated plan to try to make Binghamton drop the charges, by making him think he's losing his mind.

The boys need to get to New Caledonia, but Binghamton denies leave. He changes his mind, however, when he finds that Movie Star Rita Howard – On a brief layover at New Caledonia, and, of whom Admiral Rogers is a big fan – Has a ‘cousin' on Taratupa.

Eager to have a well-known War Correspondent do a story on him, Binghamton makes Parker – Who is the Correspondent's childhood friend – The Base PR Officer. But Parker's ideas for good press turn out to be not so good.

In response to a letter from Gruber and the guys, a glamorous movie star makes the trip to Taratupa, with a plan to create some publicity for herself. But her scheme soon goes awry, and someone else winds up grabbing all the headlines.

In the midst of the town's 500th anniversary celebration, Binghamton tries to arrange to have a visiting Psychiatrist declare the 73 Crew unfit for duty, forcing the newly-crowned 'King Of The Festival' to come up with a plan to keep his Crew together, and turn the tables on The Captain.

Tinker's best girl dumps him for a fighter pilot, so, Gruber, and the rest of the Crew fabricate a tall rumor, to build Tinker up, in the eyes of his sweetheart.

Binghamton is stressed out, and long past due for a leave, and McHale and the boys have a special reason to make sure he gets one.

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The 73 Crew's heart-sick Japanese friend, Fuji, must get a letter to his best girl, back home in Japan. But, a secret mission to mail the letter from a Japanese-held island becomes complicated, when Fuji's letter gets mixed up in Binghamton's plan to distribute propaganda leaflets to the enemy.

A new Navy directive - Ordering all married Officers to be shipped home - Prompts Binghamton to scheme to get McHale married off to a shady saloon-keeper by the name of Kate O'Hara - An old friend of McHale's. But, neither Kate, nor McHale want to tie the knot, so they join forces, to try to thwart Binghamton's plan.

Major complications develop when the guys send a chapter of Parker's war novel - Including a highly fictionalized account of his sinking of the biggest battleship in the Japanese fleet - To Parker's hometown girlfriend, in an attempt to help him win her heart.

Parker is in Binghamton's dog house, again, but gets off the hook, when Leadbottom's Niece – An Anthropology student, on a brief stay at Taratupa – Wants to keep Parker around as a study subject.

Binghamton angers the local Italians, after forbidding their fraternization with Naval personnel, but must quickly make amends with them, in order to please a certain VIP, due soon, for a visit. So, he reluctantly allows McHale and the townsfolk to throw a big wedding bash for a young Italian woman, and her fiancée - A soldier in the Italian Army.

Fed up with their less-than-pleasant accommodations, McHale and the guys move to an abandoned wine cellar, and furnish it with some luxurious furniture, found during a mission. But, after first Binghamton, then Harrigan impound their furnishings for their own use, McHale and the guys must come up with a scheme to get it back, and keep it.

After McHale defies Binghamton's orders, and travels to a nearby town, to attend his little cousin's birthday party, Binghamton tries to nail him on a desertion charge. But McHale manages to stay out of trouble, when he and his look-alike Italian Cousin, Giuseppe, assume each other's identities long enough to fool Binghamton and General Grayson.

A big-shot Washington Political Boss - With a reputation for turning war heroes into politicians - Is about to pay a visit, and Binghamton must quickly change from a 'desk jockey', into a fearless, battle-hardened Commander in order to try to become the Boss's next project, after the war.