During his shore leave, Merchant Marine petty officer Tom Garrison brings his pals, Stubby, Slugger and Punchy, who have just gambled away all their money in a crap game to another friend, Lucky, as well as his ship's band, back to his San Diego cattle ranch. Once there, he is startled to find that during his absence the ranch has been run entirely by women from a local agricultural school, including foreman Louise "Lou" Ferguson, housekeeper Abigail, and ranch hands and entertainers Patty, Maxine and LaVerne Andrews. Tom congratulates Lou on her management of the ranch, but at a barbecue held the next day to welcome Tom home, Lou confesses to him that large numbers of cattle have recently disappeared. Together, they decide to hire Pasqualito and his Indian assistant, Ogala, neighboring ranchers who have boasted of their skills as detectives, to track down the thieves. Soon after, however, Pasqualito, who is an old friend of Tom's father, holds a party at his ranch, and while the Andrews Sisters perform, Tom discovers his missing cattle on Pasqualito's property. When they confront him, Pasqualito tells them he was merely holding the cattle on his ranch for safekeeping. His property restored, Tom asks Lou to marry him before he returns to war duty.