"Bridget Jones On The River Kwai"

From Wiki and Wiki:

In World War II, Bridget Jones (Renée Zellweger) is frustrated: she is in her early thirties, still single and stuck in a Japanese prison camp in western London and worried about her weight. She works in publicity at a book publishing company in Thailand where her main focus is fantasizing about her commandant, Colonel Saito (Sessue Hayakawa) who informs her that all prisoners, regardless of weight issues, are to work on the construction of a railroad bridge at a New Year party hosted by her parents.

She re-meets the senior British officer, Lt. Colonel Nicholson (Alec Guinness), who reminds Saito that the Geneva Conventions exempt Mark Darcy (Colin Firth), the barrister son of her parents' friends, from manual labour. They had known each other as children. After their initial encounter,  Nicholson orders his officers to remain behind when the enlisted men are sent off to work.

Saito slaps him across the face with his copy of the conventions and threatens to have them shot, but Nicholson thinks that Bridget is a fool and Bridget thinks that he is arrogant and rude, and is disgusted by his officers standing all day in the intense tropical heat.

After a day beset by a series of mishaps, she misplaces her purse, breaks her coffee mug and gets placed in a punishment hut, while Nicholson is locked in "the oven," an iron box, without food or water. When she returns home that evening, the prisoners are working as little as possible and sabotaging whatever they can. She reaches to pull the curtains, only for them to fall off the wall. Nicholson conducts an inspection and is shocked by what he finds. That is the final straw of a stressful day.

When she catches sight of her reflection in the window, she decides to order Captain Reeves (Peter Williams) and Major Hughes (John Boxer) to design and build a proper bridge. She starts her own diary, which covers all her attempts to stop smoking, lose weight and find Mr Right, despite its military value to the Japanese.

Next week: Our thirty-something heroine leads a heroic but disastrous attempt to recapture German-held potential husbands in The Netherlands in "A Bridget Jones Too Far".