After St. John accidentally ruins a French Caledonian doctor's Model T while repairing it, the Appleby crew disassembles it to transport it on the ship and reassemble and sell it in San Francisco.
Just as he's needed to type multiple reports, expectant father Seaman White is diverted from his trip home to Omaha by a series of military mishaps into a trip around the world.
The crew wants to buy a watch for Chief Nelson as a birthday gift but they don't have enough money. O'Toole devises a plan to get the money from Nelson in a poker game.
Cook suddenly can't fix anything that the crew can eat, creating turmoil on the Appleby. O'Toole is determined to find the reason for the change and get things back to normal.
O'Toole begins receiving gifts from a secret admirer and in the beginning he's flattered. But the delivery of red dress makes him realize that the mystery man believes he is female.
Ensign Clifford Bender, a Congressman's son, arrives fresh from Annapolis and upsets the crew. He fills a notebook with infractions and is determined to find and shut down an on-board crap game.
O'Toole must get Seaman Di Julio, who promised his parents he'd return to Brooklyn and run the family restaurant, to re-enlist in the navy. His plan: invite Papa Di Julio onboard the ship to see how indispensable his son is.