Two bored couples think they can find happiness if they exchange spouses for the evening.

On Christmas Eve, a former thief, recently released from prison, stops a forlorn, destitute, despairing young woman from committing suicide. She's from the country and hasn't been able to find her boyfriend who came to the city earlier. The ex-con suggests having a little party together, but both are flat broke. He realizes there's an obvious solution.